{"id":14975,"date":"2022-12-12T19:45:50","date_gmt":"2022-12-12T14:15:50","guid":{"rendered":"https:\/\/www.interviewbit.com\/blog\/?post_type=web-story&#038;p=14975"},"modified":"2022-12-12T19:45:51","modified_gmt":"2022-12-12T14:15:51","slug":"a-quick-guide-to-er-model-in-dbms","status":"publish","type":"web-story","link":"https:\/\/www.interviewbit.com\/blog\/web-stories\/a-quick-guide-to-er-model-in-dbms\/","title":{"rendered":"A Quick Guide to ER Model in DBMS"},"content":{"rendered":"<p><html amp=\"\" lang=\"en\"><head><meta charSet=\"utf-8\"\/><meta name=\"viewport\" content=\"width=device-width,minimum-scale=1,initial-scale=1\"\/><script async=\"\" src=\"https:\/\/cdn.ampproject.org\/v0.js\"><\/script><script async=\"\" src=\"https:\/\/cdn.ampproject.org\/v0\/amp-story-1.0.js\" custom-element=\"amp-story\"><\/script><link 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standalone=\"\" publisher=\"InterviewBit\" publisher-logo-src=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/cropped-tumblr-logo.png\" title=\"A Quick Guide to ER Model in DBMS\" poster-portrait-src=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2022\/12\/cropped-er-model-in-dbms.png\"><amp-story-page id=\"2ba48566-4303-4648-be14-d8b890969253\" auto-advance-after=\"7s\"><amp-story-grid-layer template=\"vertical\" aspect-ratio=\"412:618\" class=\"grid-layer\"><\/p>\n<div class=\"page-fullbleed-area\" style=\"background-color:#262626\">\n<div class=\"page-safe-area\">\n<div style=\"position:absolute;pointer-events:none;left:0;top:-9.25926%;width:100%;height:118.51852%;opacity:1\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-9d6b92c2-02ff-4f48-8a2a-90dfc54f2459\">\n<div style=\"position:absolute;width:266.66667%;height:100%;left:-28.96825%;top:0%\" 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template=\"vertical\" aspect-ratio=\"412:618\" class=\"grid-layer\"><\/p>\n<div class=\"page-fullbleed-area\">\n<div class=\"page-safe-area\">\n<div style=\"position:absolute;pointer-events:none;left:0;top:-6.31068%;width:43.68932%;height:9.70874%;opacity:1\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-84a9fe46-f171-471f-bb69-fb55fff093d6\">\n<div style=\"position:absolute;width:100.28251%;height:100%;left:-0.14125%;top:0%\" data-leaf-element=\"true\"><amp-img layout=\"fill\" src=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png\" alt=\"InterviewBit-White-2\" srcSet=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png 2130w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-2048x681.png 2048w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1536x511.png 1536w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1024x340.png 1024w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-768x255.png 768w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-300x100.png 300w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-150x50.png 150w\" sizes=\"(min-width: 1024px) 20vh, 44vw\" disable-inline-width=\"true\"><\/amp-img><\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:6.06796%;top:55.98706%;width:80.09709%;height:19.09385%;opacity:1\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0;border-radius:0.6060606060606061% 0.6060606060606061% 0.6060606060606061% 0.6060606060606061% \/ 1.694915254237288% 1.694915254237288% 1.694915254237288% 1.694915254237288%\" id=\"el-5a03f828-20ca-4b52-b11f-7a23ec19dee9\">\n<h1 id=\"er-model-in-dbms\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:-0.13731060606060605% 0;font-family:&quot;Roboto&quot;,sans-serif;font-size:0.809061em;line-height:1.19;text-align:left;padding:0;color:#000000\"><span><span style=\"color: #fff\">ER Model in DBMS<\/span><\/span><\/h1>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:3.8835%;top:90.7767%;width:36.16505%;height:14.23948%;opacity:1\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-18becd98-1adb-45f1-9c10-31ec5d659e03\">\n<div style=\"position:absolute;width:100%;height:127.98857%;left:0%;top:-13.99429%\" data-leaf-element=\"true\"><amp-img layout=\"fill\" src=\"https:\/\/media.tenor.com\/8uSPaXIUm7UAAAAi\/arrow.gif\" alt=\"Arrow Sticker\" srcSet=\"https:\/\/media.tenor.com\/8uSPaXIUm7UAAAAi\/arrow.gif 127w,https:\/\/media.tenor.com\/8uSPaXIUm7UAAAAk\/arrow.gif 90w\" sizes=\"(min-width: 1024px) 16vh, 36vw\" disable-inline-width=\"true\"><\/amp-img><\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:6.06796%;top:77.18447%;width:91.26214%;height:5.66343%;opacity:1\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0;border-radius:0.5319148936170213% 0.5319148936170213% 0.5319148936170213% 0.5319148936170213% \/ 5.714285714285714% 5.714285714285714% 5.714285714285714% 5.714285714285714%\" id=\"el-0b2699a8-2aa7-4b3b-be7e-7599b1b3dbb0\">\n<h2 id=\"a-quick-overview\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:-0.11220079787234044% 0;font-family:&quot;Roboto&quot;,sans-serif;font-size:0.485437em;line-height:1.2;text-align:left;padding:0;color:#000000\"><span><span style=\"color: #347eff\">A Quick Overview<\/span><\/span><\/h2>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><\/amp-story-grid-layer><\/amp-story-page><amp-story-page id=\"47ddb9f2-270d-4b0d-993f-122d8b97f3fb\" auto-advance-after=\"7s\"><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-6ab072e6-9abc-4ef6-9507-a4db5ac1fcab\",\"keyframes\":{\"opacity\":[0,1]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"both\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script 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disable-inline-width=\"true\"><\/amp-img><\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:9.46602%;top:28.15534%;width:81.79612%;height:8.57605%;opacity:1\">\n<div id=\"anim-6ab072e6-9abc-4ef6-9507-a4db5ac1fcab\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:0;--initial-transform:none\">\n<div id=\"anim-f9aec25c-ae5c-49ad-b1ba-cc03fb97df6c\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:1;--initial-transform:scale(0.3333333333333333)\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0;border-radius:0.5934718100890208% 0.5934718100890208% 0.5934718100890208% 0.5934718100890208% \/ 3.7735849056603774% 3.7735849056603774% 3.7735849056603774% 3.7735849056603774%\" id=\"el-7bb8f5a3-dbd4-41bc-9727-7be2fd18d627\">\n<h1 id=\"er-model\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:-0.12101261127596397% 0;font-family:&quot;Roboto&quot;,&quot;Helvetica Neue&quot;,&quot;Helvetica&quot;,sans-serif;font-size:0.728155em;line-height:1.19;text-align:center;padding:0;color:#000000\"><span><span style=\"font-weight: 700; color: #347eff\">ER Model &nbsp;<\/span><\/span><\/h1>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:10.19417%;top:62.62136%;width:81.31068%;height:13.59223%;opacity:1\">\n<div id=\"anim-94aed0e1-deb7-4fbc-b18f-4117475cc1da\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:0;--initial-transform:none\">\n<div id=\"anim-635829a0-0735-441a-83fa-05c784d77ecb\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:1;--initial-transform:scale(0.3333333333333333)\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0;border-radius:0.5970149253731344% 0.5970149253731344% 0.5970149253731344% 0.5970149253731344% \/ 2.380952380952381% 2.380952380952381% 2.380952380952381% 2.380952380952381%\" id=\"el-8cf96189-28ff-484c-bdc8-97637b9ea6bf\">\n<h2 id=\"entity-relationship-model\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:-0.09738805970149197% 0;font-family:&quot;Roboto&quot;,&quot;Helvetica Neue&quot;,&quot;Helvetica&quot;,sans-serif;font-size:0.582524em;line-height:1.19;text-align:center;padding:0;color:#000000\"><span><span style=\"color: #fff\">Entity-Relationship Model<\/span><\/span><\/h2>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:21.84466%;top:35.11327%;width:57.76699%;height:22.81553%;opacity:1\">\n<div id=\"anim-98912a2a-75fa-4dfd-852a-29a9e0e0ff93\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:0;--initial-transform:none\">\n<div id=\"anim-0dd6e6c2-8bb1-485b-b6b5-642cf2594e1f\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:1;--initial-transform:scale(0.3333333333333333)\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-5ed8f2cb-43a0-428e-8aef-cb57e6e70ca7\">\n<div style=\"position:absolute;width:100.14502%;height:100%;left:-0.07251%;top:0%\" data-leaf-element=\"true\"><amp-img layout=\"fill\" src=\"https:\/\/media.tenor.com\/17qWL5uHxnUAAAAi\/fullframenl-fullframe.gif\" alt=\"Fullframenl Arrow Sticker\" srcSet=\"https:\/\/media.tenor.com\/17qWL5uHxnUAAAAi\/fullframenl-fullframe.gif 475w,https:\/\/media.tenor.com\/17qWL5uHxnUAAAAj\/fullframenl-fullframe.gif 200w,https:\/\/media.tenor.com\/17qWL5uHxnUAAAAk\/fullframenl-fullframe.gif 90w\" sizes=\"(min-width: 1024px) 26vh, 58vw\" disable-inline-width=\"true\"><\/amp-img><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><\/amp-story-grid-layer><amp-story-page-outlink layout=\"nodisplay\" cta-image=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2022\/02\/V-Model-2048x1000.png\"><a href=\"https:\/\/www.interviewbit.com\/blog\/er-model-in-dbms\/?utm_source=Ib&amp;utm_medium=er-model-in-dbms&amp;utm_campaign=webstories\" rel=\"\">Learn More<\/a><\/amp-story-page-outlink><\/amp-story-page><amp-story-page id=\"becbb31f-aa34-4058-b76e-6f59d68a9dae\" auto-advance-after=\"7s\"><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script 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style=\"position:absolute;pointer-events:none;left:0;top:-6.31068%;width:43.68932%;height:9.70874%;opacity:1\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-97d0e67d-fbd3-4fc1-9305-a39db530bf6f\">\n<div style=\"position:absolute;width:100.28251%;height:100%;left:-0.14125%;top:0%\" data-leaf-element=\"true\"><amp-img layout=\"fill\" src=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png\" alt=\"InterviewBit-White-2\" srcSet=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png 2130w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-2048x681.png 2048w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1536x511.png 1536w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1024x340.png 1024w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-768x255.png 768w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-300x100.png 300w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-150x50.png 150w\" sizes=\"(min-width: 1024px) 20vh, 44vw\" disable-inline-width=\"true\"><\/amp-img><\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:8.73786%;top:35.27508%;width:83.00971%;height:41.58576%;opacity:1\">\n<div id=\"anim-cbda0ecb-e289-477b-b67c-a0821a5f7966\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:0;--initial-transform:none\">\n<div id=\"anim-8f4e588d-d159-4b08-9844-e45e42697341\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:1;--initial-transform:scale(0.3333333333333333)\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0;border-radius:0.5847953216374269% 0.5847953216374269% 0.5847953216374269% 0.5847953216374269% \/ 0.7782101167315175% 0.7782101167315175% 0.7782101167315175% 0.7782101167315175%\" id=\"el-8ce6ad07-3cfa-4fcf-9864-56b77fc0ab5b\">\n<h2 id=\"also-known-as-a-high-level-data-model-er-model-shows-the-relationship-among-the-entity-sets-it-helps-developers-design-the-logical-design-of-the-system-from-a-data-perspective\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:0.6842105263157894% 0;font-family:&quot;Darker Grotesque&quot;,sans-serif;font-size:0.485437em;line-height:1.2;text-align:left;padding:0;color:#000000\"><span><span style=\"color: #fff\">Also known as a high-level data model, ER model shows the relationship among the entity sets. It helps developers design the logical design of the system from a data perspective.<\/span><\/span><\/h2>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:0;top:4.69256%;width:99.51456%;height:18.60841%;opacity:1\">\n<div id=\"anim-b23246bb-9a16-415a-bb43-655e370b4e38\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:0;--initial-transform:none\">\n<div id=\"anim-55696284-fcee-40db-babd-d3c766791a5d\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:1;--initial-transform:scale(0.3333333333333333)\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0;border-radius:0.4878048780487805% 0.4878048780487805% 0.4878048780487805% 0.4878048780487805% \/ 1.7391304347826086% 1.7391304347826086% 1.7391304347826086% 1.7391304347826086%;background-clip:content-box;background-color:#052258\" id=\"el-29274938-a50d-4cc7-8af0-1dd01167c89d\">\n<h1 id=\"introduction-to-er-model\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:2.613658536585366% 0;font-family:&quot;Darker Grotesque&quot;,sans-serif;font-size:0.760518em;line-height:0.9;text-align:center;padding:0.975609756097561% 1.951219512195122%;color:#000000\"><span><span style=\"font-weight: 700; color: #3372e0\">Introduction to ER Model<\/span><\/span><\/h1>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><\/amp-story-grid-layer><amp-story-page-outlink layout=\"nodisplay\" cta-image=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2022\/02\/ER-Model-In-DBMS-2048x1001.png\"><a href=\"https:\/\/www.interviewbit.com\/blog\/er-model-in-dbms\/?utm_source=Ib&amp;utm_medium=er-model-in-dbms&amp;utm_campaign=webstories\" rel=\"\">Get the facts now<\/a><\/amp-story-page-outlink><\/amp-story-page><amp-story-page id=\"277173cc-5715-49f8-a52a-cc1d7614dffc\" auto-advance-after=\"7s\"><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-64dc1ab5-6132-4ffb-9f8d-58b42e643f44 [data-leaf-element=\\\"true\\\"]\",\"keyframes\":{\"transform\":[\"translate(0%, 0%) scale(1.5)\",\"translate(0%, 0%) scale(1)\"]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"forwards\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-a2509879-d684-4630-ad44-1832486544f8\",\"keyframes\":{\"opacity\":[0,1]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"both\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script 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alt=\"person using MacBook\" srcSet=\"https:\/\/images.unsplash.com\/photo-1573495628363-04667cedc587?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw0NXx8c29mdHdhcmUlMjBkZXZlbG9wbWVudHxlbnwwfHx8fDE2NjYwMDQxMDU&amp;ixlib=rb-1.2.1&amp;fm=jpg&amp;w=4016&amp;h=6016&amp;fit=max 4016w,https:\/\/images.unsplash.com\/photo-1573495628363-04667cedc587?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw0NXx8c29mdHdhcmUlMjBkZXZlbG9wbWVudHxlbnwwfHx8fDE2NjYwMDQxMDU&amp;ixlib=rb-1.2.1&amp;fm=jpg&amp;w=3212&amp;h=4812&amp;fit=max 3212w,https:\/\/images.unsplash.com\/photo-1573495628363-04667cedc587?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw0NXx8c29mdHdhcmUlMjBkZXZlbG9wbWVudHxlbnwwfHx8fDE2NjYwMDQxMDU&amp;ixlib=rb-1.2.1&amp;fm=jpg&amp;w=2409&amp;h=3609&amp;fit=max 2409w,https:\/\/images.unsplash.com\/photo-1573495628363-04667cedc587?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw0NXx8c29mdHdhcmUlMjBkZXZlbG9wbWVudHxlbnwwfHx8fDE2NjYwMDQxMDU&amp;ixlib=rb-1.2.1&amp;fm=jpg&amp;w=1606&amp;h=2406&amp;fit=max 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style=\"position:absolute;pointer-events:none;left:0;top:-6.31068%;width:43.68932%;height:9.70874%;opacity:1\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-72a84abf-1733-492a-8831-b89e3efcd627\">\n<div style=\"position:absolute;width:100.28251%;height:100%;left:-0.14125%;top:0%\" data-leaf-element=\"true\"><amp-img layout=\"fill\" src=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png\" alt=\"InterviewBit-White-2\" srcSet=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png 2130w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-2048x681.png 2048w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1536x511.png 1536w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1024x340.png 1024w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-768x255.png 768w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-300x100.png 300w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-150x50.png 150w\" sizes=\"(min-width: 1024px) 20vh, 44vw\" disable-inline-width=\"true\"><\/amp-img><\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:6.5534%;top:40.61489%;width:86.16505%;height:35.59871%;opacity:1\">\n<div id=\"anim-a2509879-d684-4630-ad44-1832486544f8\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:0;--initial-transform:none\">\n<div id=\"anim-1ca9a7d0-6dce-4b46-800c-3aa3aabc6084\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:1;--initial-transform:scale(0.3333333333333333)\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0;border-radius:0.5633802816901409% 0.5633802816901409% 0.5633802816901409% 0.5633802816901409% \/ 0.9090909090909091% 0.9090909090909091% 0.9090909090909091% 0.9090909090909091%\" id=\"el-ec5e3202-91d7-4ef1-bf70-7008d3eed49a\">\n<h2 id=\"the-er-diagram-is-used-to-sketch-out-a-database-design-it-represent-logical-structure-of-databases-by-defining-entities-their-attributes-and-their-relationships\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:0.6591549295774647% 0;font-family:&quot;Darker Grotesque&quot;,sans-serif;font-size:0.485437em;line-height:1.2;text-align:left;padding:0;color:#000000\"><span><span style=\"color: #fff\">The ER diagram is used to sketch out a database design. It represent logical structure of databases by defining entities, their attributes, and their relationships.<\/span><\/span><\/h2>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:0;top:4.69256%;width:99.51456%;height:18.60841%;opacity:1\">\n<div id=\"anim-f87fe18f-2457-432f-9724-1ac85cd2d7b8\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:0;--initial-transform:none\">\n<div id=\"anim-81b6541b-8bfa-4f14-a0b2-f00ef6a2f256\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:1;--initial-transform:scale(0.3333333333333333)\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0;border-radius:0.4878048780487805% 0.4878048780487805% 0.4878048780487805% 0.4878048780487805% \/ 1.7391304347826086% 1.7391304347826086% 1.7391304347826086% 1.7391304347826086%;background-clip:content-box;background-color:#052258\" id=\"el-3f027781-5eb4-4105-aaa7-729039f44e57\">\n<h1 id=\"what-is-an-er-diagram\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:2.613658536585366% 0;font-family:&quot;Darker Grotesque&quot;,sans-serif;font-size:0.760518em;line-height:0.9;text-align:center;padding:0.975609756097561% 1.951219512195122%;color:#000000\"><span><span style=\"font-weight: 700; color: #3372e0\">What is an ER Diagram?<\/span><\/span><\/h1>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><\/amp-story-grid-layer><amp-story-page-outlink layout=\"nodisplay\" cta-image=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2022\/02\/ER-Model-In-DBMS-2048x1001.png\"><a href=\"https:\/\/www.interviewbit.com\/blog\/er-model-in-dbms\/?utm_source=Ib&amp;utm_medium=er-model-in-dbms&amp;utm_campaign=webstories\" rel=\"\">Learn More<\/a><\/amp-story-page-outlink><\/amp-story-page><amp-story-page id=\"34846070-e323-4706-b26d-fb796e35a673\" auto-advance-after=\"7s\"><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-b2291cf5-f521-44c6-a29c-2d7b7ed8685a\",\"keyframes\":{\"opacity\":[0,1]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"both\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-cf100ad5-f4d0-40cb-8965-dc934c0e7e57\",\"keyframes\":{\"transform\":[\"scale(0.3333333333333333)\",\"scale(1)\"]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"forwards\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-5c865d12-72c2-4525-865d-59b739149e75 [data-leaf-element=\\\"true\\\"]\",\"keyframes\":{\"transform\":[\"translate(0%, 0%) scale(1.5)\",\"translate(0%, 0%) scale(1)\"]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"forwards\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-db2edd54-647c-4af1-8fc6-089f34fbe68c\",\"keyframes\":{\"opacity\":[0,1]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"both\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-458f909a-725e-411c-aaa3-bfeaf1dc3247\",\"keyframes\":{\"transform\":[\"scale(0.3333333333333333)\",\"scale(1)\"]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"forwards\"}]<\/script><\/amp-story-animation><amp-story-grid-layer template=\"vertical\" aspect-ratio=\"412:618\" class=\"grid-layer\"><\/p>\n<div class=\"page-fullbleed-area\" style=\"background-color:#262626\">\n<div class=\"page-safe-area\">\n<div style=\"position:absolute;pointer-events:none;left:0;top:-9.25926%;width:100%;height:118.51852%;opacity:1\">\n<div id=\"anim-5c865d12-72c2-4525-865d-59b739149e75\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-2a49e5fe-7400-41ee-bdd0-0620e4c26af0\">\n<div style=\"position:absolute;width:266.31253%;height:100%;left:-83.15627%;top:0%\" data-leaf-element=\"true\"><amp-img layout=\"fill\" src=\"https:\/\/images.unsplash.com\/photo-1573164713712-03790a178651?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHwzNXx8c29mdHdhcmUlMjBkZXZlbG9wZXJzfGVufDB8fHx8MTY2NjM2MDY5Ng&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=6016&amp;h=4016&amp;fit=max\" alt=\"woman in black shirt using laptop computer\" srcSet=\"https:\/\/images.unsplash.com\/photo-1573164713712-03790a178651?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHwzNXx8c29mdHdhcmUlMjBkZXZlbG9wZXJzfGVufDB8fHx8MTY2NjM2MDY5Ng&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=6016&amp;h=4016&amp;fit=max 6016w,https:\/\/images.unsplash.com\/photo-1573164713712-03790a178651?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHwzNXx8c29mdHdhcmUlMjBkZXZlbG9wZXJzfGVufDB8fHx8MTY2NjM2MDY5Ng&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=4812&amp;h=3212&amp;fit=max 4812w,https:\/\/images.unsplash.com\/photo-1573164713712-03790a178651?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHwzNXx8c29mdHdhcmUlMjBkZXZlbG9wZXJzfGVufDB8fHx8MTY2NjM2MDY5Ng&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=3609&amp;h=2409&amp;fit=max 3609w,https:\/\/images.unsplash.com\/photo-1573164713712-03790a178651?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHwzNXx8c29mdHdhcmUlMjBkZXZlbG9wZXJzfGVufDB8fHx8MTY2NjM2MDY5Ng&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=2406&amp;h=1606&amp;fit=max 2406w,https:\/\/images.unsplash.com\/photo-1573164713712-03790a178651?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHwzNXx8c29mdHdhcmUlMjBkZXZlbG9wZXJzfGVufDB8fHx8MTY2NjM2MDY5Ng&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=1203&amp;h=803&amp;fit=max 1203w,https:\/\/images.unsplash.com\/photo-1573164713712-03790a178651?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHwzNXx8c29mdHdhcmUlMjBkZXZlbG9wZXJzfGVufDB8fHx8MTY2NjM2MDY5Ng&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=340&amp;h=227&amp;fit=max 340w\" sizes=\"(min-width: 1024px) 120vh, 267vw\" disable-inline-width=\"true\"><\/amp-img><\/div>\n<div class=\"element-overlay-area\" style=\"background-color:rgba(0,0,0,0.5)\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"page-background-overlay-area\" style=\"background-color:rgba(0,0,0,0.5)\"><\/div>\n<\/div>\n<\/div>\n<p><\/amp-story-grid-layer><amp-story-grid-layer template=\"vertical\" aspect-ratio=\"412:618\" class=\"grid-layer\"><\/p>\n<div class=\"page-fullbleed-area\">\n<div class=\"page-safe-area\">\n<div style=\"position:absolute;pointer-events:none;left:8.73786%;top:38.99676%;width:82.52427%;height:35.59871%;opacity:1\">\n<div id=\"anim-b2291cf5-f521-44c6-a29c-2d7b7ed8685a\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:0;--initial-transform:none\">\n<div id=\"anim-cf100ad5-f4d0-40cb-8965-dc934c0e7e57\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:1;--initial-transform:scale(0.3333333333333333)\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0;border-radius:0.5882352941176471% 0.5882352941176471% 0.5882352941176471% 0.5882352941176471% \/ 0.9090909090909091% 0.9090909090909091% 0.9090909090909091% 0.9090909090909091%\" id=\"el-3b64d30f-89b8-4664-af6b-7fd1f71368a6\">\n<h2 id=\"used-as-a-blueprint-for-implementing-data-in-specific-software-applications-provide-an-overview-of-how-your-tables-will-be-connected-what-fields-each-table-will-have\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:0.6882352941176471% 0;font-family:&quot;Darker Grotesque&quot;,sans-serif;font-size:0.485437em;line-height:1.2;text-align:left;padding:0;color:#000000\"><span><span style=\"color: #fff\">Used as a blueprint for implementing data in specific software applications. Provide an overview of how your tables will be connected, what fields each table will have.<\/span><\/span><\/h2>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:0;top:-6.31068%;width:43.68932%;height:9.70874%;opacity:1\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-897f2dbc-2e90-4c45-8640-36dd60797bea\">\n<div style=\"position:absolute;width:100.28251%;height:100%;left:-0.14125%;top:0%\" data-leaf-element=\"true\"><amp-img layout=\"fill\" src=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png\" alt=\"InterviewBit-White-2\" srcSet=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png 2130w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-2048x681.png 2048w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1536x511.png 1536w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1024x340.png 1024w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-768x255.png 768w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-300x100.png 300w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-150x50.png 150w\" sizes=\"(min-width: 1024px) 20vh, 44vw\" disable-inline-width=\"true\"><\/amp-img><\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:0;top:4.69256%;width:99.51456%;height:18.60841%;opacity:1\">\n<div id=\"anim-db2edd54-647c-4af1-8fc6-089f34fbe68c\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:0;--initial-transform:none\">\n<div id=\"anim-458f909a-725e-411c-aaa3-bfeaf1dc3247\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:1;--initial-transform:scale(0.3333333333333333)\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0;border-radius:0.4878048780487805% 0.4878048780487805% 0.4878048780487805% 0.4878048780487805% \/ 1.7391304347826086% 1.7391304347826086% 1.7391304347826086% 1.7391304347826086%;background-clip:content-box;background-color:#052258\" id=\"el-bdc5a1aa-31a5-4f7b-88fe-beb7a1ea5a95\">\n<h1 id=\"why-use-er-diagram\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:2.613658536585366% 0;font-family:&quot;Darker Grotesque&quot;,sans-serif;font-size:0.760518em;line-height:0.9;text-align:center;padding:0.975609756097561% 1.951219512195122%;color:#000000\"><span><span style=\"font-weight: 700; color: #3372e0\">Why use ER Diagram?<\/span><\/span><\/h1>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><\/amp-story-grid-layer><amp-story-page-outlink layout=\"nodisplay\" cta-image=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2022\/02\/ER-Model-In-DBMS-2048x1001.png\"><a href=\"https:\/\/www.interviewbit.com\/blog\/er-model-in-dbms\/?utm_source=Ib&amp;utm_medium=er-model-in-dbms&amp;utm_campaign=webstories\" rel=\"\">Discover more reasons<\/a><\/amp-story-page-outlink><\/amp-story-page><amp-story-page id=\"4f534f2f-bad3-4a48-945e-e0c9292370bf\" auto-advance-after=\"7s\"><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-4ba01b58-eb16-42b0-8218-ff4ba280d350 [data-leaf-element=\\\"true\\\"]\",\"keyframes\":{\"transform\":[\"translate(0%, 0%) scale(1.5)\",\"translate(0%, 0%) scale(1)\"]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"forwards\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-89ab43eb-573f-4353-8745-9c2a462afbc9\",\"keyframes\":{\"opacity\":[0,1]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"both\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-3ffa808c-d1e4-4c17-a2c1-fcf8f3fdb130\",\"keyframes\":{\"transform\":[\"scale(0.3333333333333333)\",\"scale(1)\"]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"forwards\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-b8db3e87-2444-4ace-8c43-c41aae5e1ac1\",\"keyframes\":{\"opacity\":[0,1]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"both\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-aaecb32e-f653-45f4-ad35-acc4aef87359\",\"keyframes\":{\"transform\":[\"scale(0.3333333333333333)\",\"scale(1)\"]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"forwards\"}]<\/script><\/amp-story-animation><amp-story-grid-layer template=\"vertical\" aspect-ratio=\"412:618\" class=\"grid-layer\"><\/p>\n<div class=\"page-fullbleed-area\" style=\"background-color:#f3f3f3\">\n<div class=\"page-safe-area\">\n<div style=\"position:absolute;pointer-events:none;left:0;top:-9.25926%;width:100%;height:118.51852%;opacity:1\">\n<div id=\"anim-4ba01b58-eb16-42b0-8218-ff4ba280d350\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-04bf1a12-2b1c-4b62-b216-8e80a1a16424\">\n<div style=\"position:absolute;width:266.31253%;height:100%;left:-83.15627%;top:0%\" data-leaf-element=\"true\"><amp-img layout=\"fill\" src=\"https:\/\/images.unsplash.com\/photo-1573164574397-dd250bc8a598?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw3OHx8c29mdHdhcmUlMjBkZXZlbG9wZXJ8ZW58MHx8fHwxNjcwMzM2Mjk2&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=6016&amp;h=4016&amp;fit=max\" alt=\"photography of three women sits beside table inside room during daytime\" srcSet=\"https:\/\/images.unsplash.com\/photo-1573164574397-dd250bc8a598?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw3OHx8c29mdHdhcmUlMjBkZXZlbG9wZXJ8ZW58MHx8fHwxNjcwMzM2Mjk2&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=6016&amp;h=4016&amp;fit=max 6016w,https:\/\/images.unsplash.com\/photo-1573164574397-dd250bc8a598?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw3OHx8c29mdHdhcmUlMjBkZXZlbG9wZXJ8ZW58MHx8fHwxNjcwMzM2Mjk2&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=4812&amp;h=3212&amp;fit=max 4812w,https:\/\/images.unsplash.com\/photo-1573164574397-dd250bc8a598?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw3OHx8c29mdHdhcmUlMjBkZXZlbG9wZXJ8ZW58MHx8fHwxNjcwMzM2Mjk2&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=3609&amp;h=2409&amp;fit=max 3609w,https:\/\/images.unsplash.com\/photo-1573164574397-dd250bc8a598?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw3OHx8c29mdHdhcmUlMjBkZXZlbG9wZXJ8ZW58MHx8fHwxNjcwMzM2Mjk2&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=2406&amp;h=1606&amp;fit=max 2406w,https:\/\/images.unsplash.com\/photo-1573164574397-dd250bc8a598?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw3OHx8c29mdHdhcmUlMjBkZXZlbG9wZXJ8ZW58MHx8fHwxNjcwMzM2Mjk2&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=1203&amp;h=803&amp;fit=max 1203w,https:\/\/images.unsplash.com\/photo-1573164574397-dd250bc8a598?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw3OHx8c29mdHdhcmUlMjBkZXZlbG9wZXJ8ZW58MHx8fHwxNjcwMzM2Mjk2&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=340&amp;h=227&amp;fit=max 340w\" sizes=\"(min-width: 1024px) 120vh, 267vw\" disable-inline-width=\"true\"><\/amp-img><\/div>\n<div class=\"element-overlay-area\" style=\"background-color:rgba(0,0,0,0.5)\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"page-background-overlay-area\" style=\"background-color:rgba(0,0,0,0.5)\"><\/div>\n<\/div>\n<\/div>\n<p><\/amp-story-grid-layer><amp-story-grid-layer template=\"vertical\" aspect-ratio=\"412:618\" class=\"grid-layer\"><\/p>\n<div class=\"page-fullbleed-area\">\n<div class=\"page-safe-area\">\n<div style=\"position:absolute;pointer-events:none;left:16.99029%;top:40.45307%;width:82.52427%;height:18.28479%;opacity:1\">\n<div id=\"anim-89ab43eb-573f-4353-8745-9c2a462afbc9\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:0;--initial-transform:none\">\n<div id=\"anim-3ffa808c-d1e4-4c17-a2c1-fcf8f3fdb130\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:1;--initial-transform:scale(0.3333333333333333)\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0;border-radius:0.5882352941176471% 0.5882352941176471% 0.5882352941176471% 0.5882352941176471% \/ 1.7699115044247788% 1.7699115044247788% 1.7699115044247788% 1.7699115044247788%\" id=\"el-fd3da496-7dc5-463d-9555-116e556544b1\">\n<h2 id=\"1-entity-2-attribute-3-relationship\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:0.6882352941176471% 0;font-family:&quot;Darker Grotesque&quot;,sans-serif;font-size:0.485437em;line-height:1.2;text-align:left;padding:0;color:#000000\"><span><span style=\"color: #fff\">1. Entity&nbsp;<\/span><br \/>\n<span style=\"color: #fff\">2. Attribute&nbsp;<\/span><br \/>\n<span style=\"color: #fff\">3. Relationship<\/span><\/span><\/h2>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:0;top:-6.31068%;width:43.68932%;height:9.70874%;opacity:1\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-7d8975a9-f9a3-4031-a131-a9f6f8c383ed\">\n<div style=\"position:absolute;width:100.28251%;height:100%;left:-0.14125%;top:0%\" data-leaf-element=\"true\"><amp-img layout=\"fill\" src=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png\" alt=\"InterviewBit-White-2\" srcSet=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png 2130w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-2048x681.png 2048w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1536x511.png 1536w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1024x340.png 1024w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-768x255.png 768w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-300x100.png 300w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-150x50.png 150w\" sizes=\"(min-width: 1024px) 20vh, 44vw\" disable-inline-width=\"true\"><\/amp-img><\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:0;top:4.69256%;width:99.51456%;height:18.60841%;opacity:1\">\n<div id=\"anim-b8db3e87-2444-4ace-8c43-c41aae5e1ac1\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:0;--initial-transform:none\">\n<div id=\"anim-aaecb32e-f653-45f4-ad35-acc4aef87359\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:1;--initial-transform:scale(0.3333333333333333)\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0;border-radius:0.4878048780487805% 0.4878048780487805% 0.4878048780487805% 0.4878048780487805% \/ 1.7391304347826086% 1.7391304347826086% 1.7391304347826086% 1.7391304347826086%;background-clip:content-box;background-color:#052258\" id=\"el-d48fe4ec-9680-434a-b04b-846042b4d6ac\">\n<h1 id=\"main-components-of-er-diagram\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:2.613658536585366% 0;font-family:&quot;Darker Grotesque&quot;,sans-serif;font-size:0.760518em;line-height:0.9;text-align:center;padding:0.975609756097561% 1.951219512195122%;color:#000000\"><span><span style=\"font-weight: 700; color: #3372e0\">Main components of ER Diagram<\/span><\/span><\/h1>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><\/amp-story-grid-layer><amp-story-page-outlink layout=\"nodisplay\" cta-image=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2022\/02\/ER-Model-In-DBMS-2048x1001.png\"><a href=\"https:\/\/www.interviewbit.com\/blog\/er-model-in-dbms\/?utm_source=Ib&amp;utm_medium=er-model-in-dbms&amp;utm_campaign=webstories\" rel=\"\">Check them now<\/a><\/amp-story-page-outlink><\/amp-story-page><amp-story-page id=\"59f657bd-6927-4ed4-86bb-777edf92a26f\" auto-advance-after=\"7s\"><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-9b77c311-6b02-47b3-997c-4914f467975b [data-leaf-element=\\\"true\\\"]\",\"keyframes\":{\"transform\":[\"translate(0%, 0%) scale(1.5)\",\"translate(0%, 0%) scale(1)\"]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"forwards\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-89400b6b-0419-4e9c-aa3c-f9cd16dff57c\",\"keyframes\":{\"opacity\":[0,1]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"both\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-39c53dfd-b7c3-42b7-ba36-ae2eff42e9f7\",\"keyframes\":{\"transform\":[\"scale(0.3333333333333333)\",\"scale(1)\"]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"forwards\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-80f0dadc-d9dc-4329-a2d3-a1f3b9452bce\",\"keyframes\":{\"opacity\":[0,1]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"both\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-ce88ccfc-e816-4a1a-92c9-9858908660cf\",\"keyframes\":{\"transform\":[\"scale(0.3333333333333333)\",\"scale(1)\"]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"forwards\"}]<\/script><\/amp-story-animation><amp-story-grid-layer template=\"vertical\" aspect-ratio=\"412:618\" class=\"grid-layer\"><\/p>\n<div class=\"page-fullbleed-area\" style=\"background-color:#d9d9d9\">\n<div class=\"page-safe-area\">\n<div style=\"position:absolute;pointer-events:none;left:0;top:-9.25926%;width:100%;height:118.51852%;opacity:1\">\n<div id=\"anim-9b77c311-6b02-47b3-997c-4914f467975b\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-4e593d99-c0e1-47ad-bf56-c214c005d1dd\">\n<div style=\"position:absolute;width:266.31253%;height:100%;left:-83.15627%;top:0%\" data-leaf-element=\"true\"><amp-img layout=\"fill\" src=\"https:\/\/images.unsplash.com\/photo-1573164574511-73c773193279?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHwxMDh8fHNvZnR3YXJlJTIwZGV2ZWxvcGVyfGVufDB8fHx8MTY3MDMzNjMzMA&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=6016&amp;h=4016&amp;fit=max\" alt=\"photography of people inside room during daytime\" srcSet=\"https:\/\/images.unsplash.com\/photo-1573164574511-73c773193279?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHwxMDh8fHNvZnR3YXJlJTIwZGV2ZWxvcGVyfGVufDB8fHx8MTY3MDMzNjMzMA&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=6016&amp;h=4016&amp;fit=max 6016w,https:\/\/images.unsplash.com\/photo-1573164574511-73c773193279?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHwxMDh8fHNvZnR3YXJlJTIwZGV2ZWxvcGVyfGVufDB8fHx8MTY3MDMzNjMzMA&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=4812&amp;h=3212&amp;fit=max 4812w,https:\/\/images.unsplash.com\/photo-1573164574511-73c773193279?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHwxMDh8fHNvZnR3YXJlJTIwZGV2ZWxvcGVyfGVufDB8fHx8MTY3MDMzNjMzMA&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=3609&amp;h=2409&amp;fit=max 3609w,https:\/\/images.unsplash.com\/photo-1573164574511-73c773193279?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHwxMDh8fHNvZnR3YXJlJTIwZGV2ZWxvcGVyfGVufDB8fHx8MTY3MDMzNjMzMA&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=2406&amp;h=1606&amp;fit=max 2406w,https:\/\/images.unsplash.com\/photo-1573164574511-73c773193279?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHwxMDh8fHNvZnR3YXJlJTIwZGV2ZWxvcGVyfGVufDB8fHx8MTY3MDMzNjMzMA&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=1203&amp;h=803&amp;fit=max 1203w,https:\/\/images.unsplash.com\/photo-1573164574511-73c773193279?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHwxMDh8fHNvZnR3YXJlJTIwZGV2ZWxvcGVyfGVufDB8fHx8MTY3MDMzNjMzMA&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=340&amp;h=227&amp;fit=max 340w\" sizes=\"(min-width: 1024px) 120vh, 267vw\" disable-inline-width=\"true\"><\/amp-img><\/div>\n<div class=\"element-overlay-area\" style=\"background-color:rgba(0,0,0,0.5)\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"page-background-overlay-area\" style=\"background-color:rgba(0,0,0,0.5)\"><\/div>\n<\/div>\n<\/div>\n<p><\/amp-story-grid-layer><amp-story-grid-layer template=\"vertical\" aspect-ratio=\"412:618\" class=\"grid-layer\"><\/p>\n<div class=\"page-fullbleed-area\">\n<div class=\"page-safe-area\">\n<div style=\"position:absolute;pointer-events:none;left:9.46602%;top:36.24595%;width:82.52427%;height:41.42395%;opacity:1\">\n<div id=\"anim-89400b6b-0419-4e9c-aa3c-f9cd16dff57c\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:0;--initial-transform:none\">\n<div id=\"anim-39c53dfd-b7c3-42b7-ba36-ae2eff42e9f7\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:1;--initial-transform:scale(0.3333333333333333)\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0;border-radius:0.5882352941176471% 0.5882352941176471% 0.5882352941176471% 0.5882352941176471% \/ 0.78125% 0.78125% 0.78125% 0.78125%\" id=\"el-a1740b18-e93b-4d62-8a6e-69f1d268176e\">\n<h2 id=\"1-one-to-one-it-creates-a-relationship-between-two-tables-where-one-row-of-one-table-can-only-be-related-to-one-row-of-another-table\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:0.6882352941176471% 0;font-family:&quot;Darker Grotesque&quot;,sans-serif;font-size:0.485437em;line-height:1.2;text-align:left;padding:0;color:#000000\"><span><span style=\"font-weight: 700; color: #347eff\">1. One to One<\/span><span style=\"color: #347eff\">&nbsp;<\/span><\/p>\n<p><span style=\"color: #fff\">It creates a relationship between two tables where one row of one table can only be related to one row of another table.<\/span><\/span><\/h2>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:0;top:-6.31068%;width:43.68932%;height:9.70874%;opacity:1\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-4b2b28bd-6954-48ea-9c76-f08a367817d1\">\n<div style=\"position:absolute;width:100.28251%;height:100%;left:-0.14125%;top:0%\" data-leaf-element=\"true\"><amp-img layout=\"fill\" src=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png\" alt=\"InterviewBit-White-2\" srcSet=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png 2130w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-2048x681.png 2048w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1536x511.png 1536w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1024x340.png 1024w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-768x255.png 768w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-300x100.png 300w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-150x50.png 150w\" sizes=\"(min-width: 1024px) 20vh, 44vw\" disable-inline-width=\"true\"><\/amp-img><\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:0;top:4.69256%;width:99.51456%;height:18.60841%;opacity:1\">\n<div id=\"anim-80f0dadc-d9dc-4329-a2d3-a1f3b9452bce\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:0;--initial-transform:none\">\n<div id=\"anim-ce88ccfc-e816-4a1a-92c9-9858908660cf\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:1;--initial-transform:scale(0.3333333333333333)\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0;border-radius:0.4878048780487805% 0.4878048780487805% 0.4878048780487805% 0.4878048780487805% \/ 1.7391304347826086% 1.7391304347826086% 1.7391304347826086% 1.7391304347826086%;background-clip:content-box;background-color:#052258\" id=\"el-b2e5cecf-8e83-47ea-b767-46b6b1e32cc0\">\n<h1 id=\"types-of-relationships\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:2.613658536585366% 0;font-family:&quot;Darker Grotesque&quot;,sans-serif;font-size:0.760518em;line-height:0.9;text-align:center;padding:0.975609756097561% 1.951219512195122%;color:#000000\"><span><span style=\"font-weight: 700; color: #3372e0\">Types of Relationships<\/span><\/span><\/h1>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><\/amp-story-grid-layer><amp-story-page-outlink layout=\"nodisplay\" cta-image=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2022\/02\/ER-Model-In-DBMS-2048x1001.png\"><a href=\"https:\/\/www.interviewbit.com\/blog\/er-model-in-dbms\/?utm_source=Ib&amp;utm_medium=er-model-in-dbms&amp;utm_campaign=webstories\" rel=\"\">Check out example<\/a><\/amp-story-page-outlink><\/amp-story-page><amp-story-page id=\"63a0a727-acee-4ca0-abdd-fbd08f74fa87\" auto-advance-after=\"7s\"><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-bed700af-62f5-486f-8c04-b2f8a0989f6e [data-leaf-element=\\\"true\\\"]\",\"keyframes\":{\"transform\":[\"translate(0%, 0%) scale(1.5)\",\"translate(0%, 0%) scale(1)\"]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"forwards\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-abf65875-1d2f-4a14-84b8-875540537e0c\",\"keyframes\":{\"opacity\":[0,1]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"both\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-15f8e5dc-5d50-447b-9c9a-545892231546\",\"keyframes\":{\"transform\":[\"scale(0.3333333333333333)\",\"scale(1)\"]},\"delay\":0,\"duration\":2000,\"easing\":\"cubic-bezier(.3,0,.55,1)\",\"fill\":\"forwards\"}]<\/script><\/amp-story-animation><amp-story-grid-layer template=\"vertical\" aspect-ratio=\"412:618\" class=\"grid-layer\"><\/p>\n<div class=\"page-fullbleed-area\" style=\"background-color:#f3a673\">\n<div class=\"page-safe-area\">\n<div style=\"position:absolute;pointer-events:none;left:0;top:-9.25926%;width:100%;height:118.51852%;opacity:1\">\n<div id=\"anim-bed700af-62f5-486f-8c04-b2f8a0989f6e\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-6c9ddd8a-3b70-4748-a8de-38e2bd1bfe0e\">\n<div style=\"position:absolute;width:266.31253%;height:100%;left:-83.15627%;top:0%\" data-leaf-element=\"true\"><amp-img layout=\"fill\" src=\"https:\/\/images.unsplash.com\/photo-1573165759995-5865a394a1aa?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw2M3x8c29mdHdhcmUlMjBkZXZlbG9wZXJ8ZW58MHx8fHwxNjY5OTAyNjU0&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=6016&amp;h=4016&amp;fit=max\" alt=\"people sitting beside rectangular brown table with laptops\" srcSet=\"https:\/\/images.unsplash.com\/photo-1573165759995-5865a394a1aa?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw2M3x8c29mdHdhcmUlMjBkZXZlbG9wZXJ8ZW58MHx8fHwxNjY5OTAyNjU0&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=6016&amp;h=4016&amp;fit=max 6016w,https:\/\/images.unsplash.com\/photo-1573165759995-5865a394a1aa?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw2M3x8c29mdHdhcmUlMjBkZXZlbG9wZXJ8ZW58MHx8fHwxNjY5OTAyNjU0&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=4812&amp;h=3212&amp;fit=max 4812w,https:\/\/images.unsplash.com\/photo-1573165759995-5865a394a1aa?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw2M3x8c29mdHdhcmUlMjBkZXZlbG9wZXJ8ZW58MHx8fHwxNjY5OTAyNjU0&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=3609&amp;h=2409&amp;fit=max 3609w,https:\/\/images.unsplash.com\/photo-1573165759995-5865a394a1aa?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw2M3x8c29mdHdhcmUlMjBkZXZlbG9wZXJ8ZW58MHx8fHwxNjY5OTAyNjU0&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=2406&amp;h=1606&amp;fit=max 2406w,https:\/\/images.unsplash.com\/photo-1573165759995-5865a394a1aa?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw2M3x8c29mdHdhcmUlMjBkZXZlbG9wZXJ8ZW58MHx8fHwxNjY5OTAyNjU0&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=1203&amp;h=803&amp;fit=max 1203w,https:\/\/images.unsplash.com\/photo-1573165759995-5865a394a1aa?ixid=MnwxMzcxOTN8MHwxfHNlYXJjaHw2M3x8c29mdHdhcmUlMjBkZXZlbG9wZXJ8ZW58MHx8fHwxNjY5OTAyNjU0&amp;ixlib=rb-4.0.3&amp;fm=jpg&amp;w=340&amp;h=227&amp;fit=max 340w\" sizes=\"(min-width: 1024px) 120vh, 267vw\" disable-inline-width=\"true\"><\/amp-img><\/div>\n<div class=\"element-overlay-area\" style=\"background-color:rgba(0,0,0,0.5)\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"page-background-overlay-area\" style=\"background-color:rgba(0,0,0,0.5)\"><\/div>\n<\/div>\n<\/div>\n<p><\/amp-story-grid-layer><amp-story-grid-layer template=\"vertical\" aspect-ratio=\"412:618\" class=\"grid-layer\"><\/p>\n<div class=\"page-fullbleed-area\">\n<div class=\"page-safe-area\">\n<div style=\"position:absolute;pointer-events:none;left:0;top:-6.31068%;width:43.68932%;height:9.70874%;opacity:1\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-e805420d-1c33-4444-aad0-5d1981a2374e\">\n<div style=\"position:absolute;width:100.28251%;height:100%;left:-0.14125%;top:0%\" data-leaf-element=\"true\"><amp-img layout=\"fill\" src=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png\" alt=\"InterviewBit-White-2\" srcSet=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png 2130w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-2048x681.png 2048w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1536x511.png 1536w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1024x340.png 1024w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-768x255.png 768w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-300x100.png 300w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-150x50.png 150w\" sizes=\"(min-width: 1024px) 20vh, 44vw\" disable-inline-width=\"true\"><\/amp-img><\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:8.73786%;top:35.76052%;width:82.52427%;height:41.42395%;opacity:1\">\n<div id=\"anim-abf65875-1d2f-4a14-84b8-875540537e0c\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:0;--initial-transform:none\">\n<div id=\"anim-15f8e5dc-5d50-447b-9c9a-545892231546\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:1;--initial-transform:scale(0.3333333333333333)\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0;border-radius:0.5882352941176471% 0.5882352941176471% 0.5882352941176471% 0.5882352941176471% \/ 0.78125% 0.78125% 0.78125% 0.78125%\" id=\"el-ac7de65e-c48d-4335-ac67-a53bbce79fc3\">\n<h2 id=\"2-one-to-many-it-creates-a-relationship-between-two-tables-where-one-row-of-one-table-can-only-be-related-to-one-or-more-rows-of-another-table\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:0.6882352941176471% 0;font-family:&quot;Darker Grotesque&quot;,sans-serif;font-size:0.485437em;line-height:1.2;text-align:left;padding:0;color:#000000\"><span><span style=\"font-weight: 700; color: #347eff\">2. One to Many<\/span><span style=\"color: #fff\">&nbsp;<\/span><\/p>\n<p><span style=\"color: #fff\">It creates a relationship between two tables where one row of one table can only be related to one or more rows of another table.<\/span><\/span><\/h2>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><\/amp-story-grid-layer><amp-story-page-outlink layout=\"nodisplay\" cta-image=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2022\/02\/ER-Model-In-DBMS-2048x1001.png\"><a href=\"https:\/\/www.interviewbit.com\/blog\/er-model-in-dbms\/?utm_source=Ib&amp;utm_medium=er-model-in-dbms&amp;utm_campaign=webstories\" rel=\"\">Check other types<\/a><\/amp-story-page-outlink><\/amp-story-page><amp-story-page id=\"b2cd7624-c3ec-4a7d-9867-d7d4dc8f0933\" auto-advance-after=\"7s\"><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-80d164b0-ac93-4881-bc27-8a9a0a7aa1ef\",\"keyframes\":{\"opacity\":[0,1]},\"delay\":0,\"duration\":1000,\"easing\":\"cubic-bezier(0.2, 0.6, 0.0, 1)\",\"fill\":\"both\"}]<\/script><\/amp-story-animation><amp-story-animation layout=\"nodisplay\" trigger=\"visibility\"><script type=\"application\/json\">[{\"selector\":\"#anim-c9a87b0c-8a08-4202-9fb8-3077e4975859\",\"keyframes\":{\"transform\":[\"translate3d(0px, 159.23319%, 0)\",\"translate3d(0px, 0px, 0)\"]},\"delay\":0,\"duration\":1000,\"easing\":\"cubic-bezier(0.2, 0.6, 0.0, 1)\",\"fill\":\"both\"}]<\/script><\/amp-story-animation><amp-story-grid-layer template=\"vertical\" aspect-ratio=\"412:618\" class=\"grid-layer\"><\/p>\n<div class=\"page-fullbleed-area\" style=\"background-color:#b7b099\">\n<div class=\"page-safe-area\">\n<div style=\"position:absolute;pointer-events:none;left:0;top:-9.25926%;width:100%;height:118.51852%;opacity:1\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-ae3f6c5c-5c72-4ba8-b6bc-e71174f9ed50\">\n<div style=\"position:absolute;width:177.77778%;height:100%;left:-38.88889%;top:0%\" data-leaf-element=\"true\"><amp-img layout=\"fill\" src=\"https:\/\/media.tenor.com\/Yg8O2WDlGkYAAAAi\/cyrentec-sci-fi.gif\" alt=\"Cyrentec Sci Fi Sticker\" srcSet=\"https:\/\/media.tenor.com\/Yg8O2WDlGkYAAAAi\/cyrentec-sci-fi.gif 498w,https:\/\/media.tenor.com\/Yg8O2WDlGkYAAAAj\/cyrentec-sci-fi.gif 200w,https:\/\/media.tenor.com\/Yg8O2WDlGkYAAAAk\/cyrentec-sci-fi.gif 90w\" sizes=\"(min-width: 1024px) 80vh, 178vw\" disable-inline-width=\"true\"><\/amp-img><\/div>\n<div class=\"element-overlay-area\" style=\"background-color:rgba(0,0,0,0.5)\"><\/div>\n<\/div>\n<\/div>\n<div class=\"page-background-overlay-area\" style=\"background-color:rgba(0,0,0,0.5)\"><\/div>\n<\/div>\n<\/div>\n<p><\/amp-story-grid-layer><amp-story-grid-layer template=\"vertical\" aspect-ratio=\"412:618\" class=\"grid-layer\"><\/p>\n<div class=\"page-fullbleed-area\">\n<div class=\"page-safe-area\">\n<div style=\"position:absolute;pointer-events:none;left:7.28155%;top:36.08414%;width:81.06796%;height:45.95469%;opacity:1\">\n<div id=\"anim-80d164b0-ac93-4881-bc27-8a9a0a7aa1ef\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:0;--initial-transform:none\">\n<div id=\"anim-c9a87b0c-8a08-4202-9fb8-3077e4975859\" class=\"animation-wrapper\" style=\"width:100%;height:100%;display:block;position:absolute;top:0;left:0;--initial-opacity:1;--initial-transform:translate3d(0px, 159.23319%, 0)\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" id=\"el-021e0541-35be-4946-80af-40b0a2d780a0\">\n<h2 id=\"check-out-how-to-create-er-diagrams-and-their-various-features\" class=\"fill text-wrapper\" style=\"white-space:pre-line;overflow-wrap:break-word;word-break:break-word;margin:2.0571406016092815% 0;font-family:&quot;Anton&quot;,sans-serif;font-size:0.728155em;line-height:1.2;text-align:left;padding:0;color:#000000\"><span><span style=\"color: #faf4ea\">Check out how to create ER diagrams and their various features.<\/span><\/span><\/h2>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div style=\"position:absolute;pointer-events:none;left:0;top:-6.31068%;width:43.68932%;height:9.70874%;opacity:1\">\n<div style=\"pointer-events:initial;width:100%;height:100%;display:block;position:absolute;top:0;left:0;z-index:0\" class=\"mask\" id=\"el-02d26325-9147-4e6e-be20-58b05760040a\">\n<div style=\"position:absolute;width:100.28251%;height:100%;left:-0.14125%;top:0%\" data-leaf-element=\"true\"><amp-img layout=\"fill\" src=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png\" alt=\"InterviewBit-White-2\" srcSet=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2.png 2130w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-2048x681.png 2048w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1536x511.png 1536w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-1024x340.png 1024w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-768x255.png 768w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-300x100.png 300w,https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2021\/07\/InterviewBit-White-2-150x50.png 150w\" sizes=\"(min-width: 1024px) 20vh, 44vw\" disable-inline-width=\"true\"><\/amp-img><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><\/amp-story-grid-layer><amp-story-page-outlink layout=\"nodisplay\" cta-image=\"https:\/\/www.interviewbit.com\/blog\/wp-content\/uploads\/2022\/02\/ER-Model-In-DBMS-2048x1001.png\"><a href=\"https:\/\/www.interviewbit.com\/blog\/er-model-in-dbms\/?utm_source=Ib&amp;utm_medium=er-model-in-dbms&amp;utm_campaign=webstories\" rel=\"\">Explore Now<\/a><\/amp-story-page-outlink><\/amp-story-page><\/amp-story><\/body><\/html><\/p>\n","protected":false},"excerpt":{"rendered":"This web story will provide you with a short overview of the ER-Model with its importance and 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