{"version":"1.0","provider_name":"We Notes Ti\u1ebfng Vi\u1ec7t\u2013 Collaborative AI Insights &amp; Intelligence Hub","provider_url":"https:\/\/www.we-notes.com\/vn","author_name":"vpadmin","author_url":"https:\/\/www.we-notes.com\/vn\/author\/vpadmin\/","title":"Nh\u1eefng nh\u1ea7m l\u1eabn v\u1ec1 s\u01a1 \u0111\u1ed3 ER: 15 Kh\u00f3a, M\u1ed1i quan h\u1ec7 v\u00e0 Cardinality \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"GHWchUSlKT\"><a href=\"https:\/\/www.we-notes.com\/vn\/er-diagram-relations-keys-cardinality-guide\/\">C\u00e2u h\u1ecfi &#038; C\u00e2u tr\u1ea3 l\u1eddi: Gi\u1ea3i quy\u1ebft 15 nh\u1ea7m l\u1eabn ph\u1ed5 bi\u1ebfn v\u1ec1 m\u1ed1i quan h\u1ec7, kh\u00f3a v\u00e0 t\u00ednh cardinality trong s\u01a1 \u0111\u1ed3 ER<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.we-notes.com\/vn\/er-diagram-relations-keys-cardinality-guide\/embed\/#?secret=GHWchUSlKT\" width=\"600\" height=\"338\" title=\"&#8220;C\u00e2u h\u1ecfi &#038; C\u00e2u tr\u1ea3 l\u1eddi: Gi\u1ea3i quy\u1ebft 15 nh\u1ea7m l\u1eabn ph\u1ed5 bi\u1ebfn v\u1ec1 m\u1ed1i quan h\u1ec7, kh\u00f3a v\u00e0 t\u00ednh cardinality trong s\u01a1 \u0111\u1ed3 ER&#8221; &#8212; We Notes Ti\u1ebfng Vi\u1ec7t\u2013 Collaborative AI Insights &amp; Intelligence Hub\" data-secret=\"GHWchUSlKT\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.we-notes.com\/vn\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/www.we-notes.com\/vn\/wp-content\/uploads\/sites\/25\/2026\/04\/er-diagram-15-concepts-chalkboard-infographic.jpg","thumbnail_width":1664,"thumbnail_height":928,"description":"Gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 thi\u1ebft k\u1ebf ERD ph\u1ed5 bi\u1ebfn. H\u01b0\u1edbng d\u1eabn v\u1ec1 Kh\u00f3a, Cardinality, M\u1ed1i quan h\u1ec7 v\u00e0 Chu\u1ea9n h\u00f3a. C\u00e2u h\u1ecfi v\u00e0 tr\u1ea3 l\u1eddi r\u00f5 r\u00e0ng d\u00e0nh cho c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 c\u01a1 s\u1edf d\u1eef li\u1ec7u."}