{"id":1534,"date":"2026-03-23T04:22:49","date_gmt":"2026-03-23T04:22:49","guid":{"rendered":"https:\/\/www.ez-knowledge.com\/in\/indexing-patterns-based-on-erd-structure\/"},"modified":"2026-03-23T04:22:49","modified_gmt":"2026-03-23T04:22:49","slug":"indexing-patterns-based-on-erd-structure","status":"publish","type":"post","link":"https:\/\/www.ez-knowledge.com\/in\/indexing-patterns-based-on-erd-structure\/","title":{"rendered":"\u0906\u092a\u0915\u0947 \u0908\u0906\u0930 \u0921\u093e\u092f\u0917\u094d\u0930\u093e\u092e \u0938\u0902\u0930\u091a\u0928\u093e \u0915\u0947 \u0906\u0927\u093e\u0930 \u092a\u0930 \u0907\u0902\u0921\u0947\u0915\u094d\u0938\u093f\u0902\u0917 \u092a\u0948\u091f\u0930\u094d\u0928"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Hand-drawn infographic illustrating database indexing strategies based on ERD structure, featuring primary key optimization, foreign key indexing, many-to-many junction tables, composite and covering indexes, common pitfalls to avoid, and performance monitoring tips with visual flow from entity relationships to query performance gains\" decoding=\"async\" src=\"https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/03\/erd-indexing-patterns-infographic-hand-drawn.jpg\"\/><\/figure>\n<\/div>\n<p>\u090f\u0915 \u091f\u093f\u0915\u093e\u090a \u0921\u0947\u091f\u093e\u092c\u0947\u0938 \u0915\u094b \u0921\u093f\u091c\u093c\u093e\u0907\u0928 \u0915\u0930\u0928\u093e \u092a\u0939\u0932\u0947 \u0915\u094d\u0935\u0947\u0930\u0940 \u091a\u0932\u0928\u0947 \u0938\u0947 \u092c\u0939\u0941\u0924 \u092a\u0939\u0932\u0947 \u0936\u0941\u0930\u0942 \u0939\u094b\u0924\u093e \u0939\u0948\u0964 \u092f\u0939 \u092c\u094d\u0932\u0942\u092a\u094d\u0930\u093f\u0902\u091f: \u090f\u0902\u091f\u093f\u091f\u0940 \u0930\u093f\u0932\u0947\u0936\u0928\u0936\u093f\u092a \u0921\u093e\u092f\u0917\u094d\u0930\u093e\u092e (\u0908\u0906\u0930\u0921\u0940) \u0915\u0947 \u0938\u093e\u0925 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\u0915\u0930\u0924\u0947 \u0939\u0948\u0902? \u0906\u092a \u0915\u0948\u0938\u0947 \u0938\u0949\u0930\u094d\u091f \u0915\u0930\u0924\u0947 \u0939\u0948\u0902? \u0908\u0906\u0930\u0921\u0940 \u0909\u0924\u094d\u0924\u0930 \u0915\u0940 \u0913\u0930 \u0907\u0936\u093e\u0930\u093e \u0915\u0930\u0924\u093e \u0939\u0948\u0964<\/li>\n<\/ul>\n<h2>\ud83c\udfd7\ufe0f \u092a\u094d\u0930\u093e\u0925\u092e\u093f\u0915 \u0915\u0941\u0902\u091c\u0940 \u0907\u0902\u0921\u0947\u0915\u094d\u0938\u093f\u0902\u0917 \u0930\u0923\u0928\u0940\u0924\u093f\u092f\u093e\u0901<\/h2>\n<p>\u092a\u094d\u0930\u093e\u0925\u092e\u093f\u0915 \u0915\u0941\u0902\u091c\u0940 (\u092a\u0940\u0915\u0947) \u0939\u0930 \u091f\u0947\u092c\u0932 \u0915\u0940 \u0930\u0940\u0922\u093c \u0939\u0948\u0964 \u092f\u0939 \u0905\u0926\u094d\u0935\u093f\u0924\u0940\u092f\u0924\u093e \u0915\u0940 \u0917\u093e\u0930\u0902\u091f\u0940 \u0926\u0947\u0924\u0940 \u0939\u0948 \u0914\u0930 \u092c\u0939\u0941\u0924 \u0938\u0947 \u0938\u093f\u0938\u094d\u091f\u092e \u092e\u0947\u0902 \u0921\u0947\u091f\u093e \u0938\u094d\u091f\u094b\u0930\u0947\u091c \u0915\u0947 \u0932\u093f\u090f \u0915\u094d\u0932\u0938\u094d\u091f\u0930\u093f\u0902\u0917 \u0924\u0902\u0924\u094d\u0930 \u092a\u094d\u0930\u0926\u093e\u0928 \u0915\u0930\u0924\u0940 \u0939\u0948\u0964 \u0905\u092a\u0928\u0947 \u0907\u0902\u0921\u0947\u0915\u094d\u0938\u093f\u0902\u0917 \u0915\u094b \u092a\u0940\u0915\u0947 \u092a\u0930\u093f\u092d\u093e\u0937\u093e \u0915\u0947 \u0938\u093e\u0925 \u092e\u0947\u0932 \u0915\u0930\u0928\u093e \u092a\u0939\u0932\u093e \u0915\u0926\u092e \u0939\u0948\u0964<\/p>\n<h3>1. \u0938\u0930\u094b\u0917\u0947\u091f \u092c\u0928\u093e\u092e \u092a\u094d\u0930\u093e\u0915\u0943\u0924\u093f\u0915 \u0915\u0941\u0902\u091c\u093f\u092f\u093e\u0901<\/h3>\n<p>\u090f\u0915 \u0938\u0930\u094b\u0917\u0947\u091f \u0915\u0941\u0902\u091c\u0940 (\u090f\u0915 \u0938\u094d\u0935\u0924\u0903 \u092c\u0922\u093c\u0924\u0940 \u0939\u0941\u0908 \u0906\u0908\u0921\u0940) \u0914\u0930 \u090f\u0915 \u092a\u094d\u0930\u093e\u0915\u0943\u0924\u093f\u0915 \u0915\u0941\u0902\u091c\u0940 (\u091c\u0948\u0938\u0947 \u0908\u092e\u0947\u0932 \u092f\u093e \u0938\u094b\u0936\u0932 \u0938\u093f\u0915\u094d\u092f\u094b\u0930\u093f\u091f\u0940 \u0928\u0902\u092c\u0930) \u0915\u0947 \u092c\u0940\u091a \u091a\u092f\u0928 \u0915\u0930\u0928\u093e \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u092a\u094d\u0930\u0926\u0930\u094d\u0936\u0928 \u0915\u094b \u0915\u093e\u092b\u0940 \u092a\u094d\u0930\u092d\u093e\u0935\u093f\u0924 \u0915\u0930\u0924\u093e \u0939\u0948\u0964<\/p>\n<ul>\n<li><strong>\u0938\u0930\u094b\u0917\u0947\u091f \u0915\u0941\u0902\u091c\u093f\u092f\u093e\u0901:<\/strong> \u092f\u0947 \u0915\u094d\u0932\u0938\u094d\u091f\u0930\u093f\u0902\u0917 \u0915\u0947 \u0932\u093f\u090f \u0906\u0926\u0930\u094d\u0936 \u0939\u0948\u0902\u0964 \u0935\u0947 \u091b\u094b\u091f\u0940, \u090f\u0915\u0926\u093f\u0936\u093e \u092e\u0947\u0902 \u092c\u0922\u093c\u0924\u0940 \u0939\u0941\u0908 \u0914\u0930 \u0915\u094d\u0930\u092e\u093f\u0915 \u0939\u094b\u0924\u0940 \u0939\u0948\u0902\u0964 \u0907\u0938\u0938\u0947 \u0932\u0947\u0916\u0928 \u0915\u0947 \u0926\u094c\u0930\u093e\u0928 \u092a\u0947\u091c \u0938\u094d\u092a\u094d\u0932\u093f\u091f \u0914\u0930 \u092b\u094d\u0930\u0948\u0917\u092e\u0947\u0902\u091f\u0947\u0936\u0928 \u0915\u092e \u0939\u094b\u0924\u093e \u0939\u0948\u0964 \ud83d\udcc8<\/li>\n<li><strong>\u092a\u094d\u0930\u093e\u0915\u0943\u0924\u093f\u0915 \u0915\u0941\u0902\u091c\u093f\u092f\u093e\u0901:<\/strong> \u091c\u092c\u0915\u093f \u0907\u0928\u0915\u093e \u0924\u093e\u0930\u094d\u0915\u093f\u0915 \u0905\u0930\u094d\u0925 \u0939\u094b\u0924\u093e \u0939\u0948, \u0935\u0947 \u0932\u0902\u092c\u0940 \u0939\u094b \u0938\u0915\u0924\u0940 \u0939\u0948\u0902, \u0932\u0902\u092c\u093e\u0908 \u092e\u0947\u0902 \u092c\u0926\u0932\u093e\u0935 \u0935\u093e\u0932\u0940 \u0939\u094b \u0938\u0915\u0924\u0940 \u0939\u0948\u0902 \u092f\u093e \u092c\u0926\u0932\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u091d\u0941\u0915\u0940 \u0939\u094b \u0938\u0915\u0924\u0940 \u0939\u0948\u0902\u0964 \u0907\u0928\u0915\u0947 \u0907\u0902\u0921\u0947\u0915\u094d\u0938\u093f\u0902\u0917 \u0938\u0947 \u092c\u0921\u093c\u0947 \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u0906\u0915\u093e\u0930 \u0914\u0930 \u092a\u0942\u0930\u094d\u0923\u093e\u0902\u0915-\u0906\u0927\u093e\u0930\u093f\u0924 \u0915\u0941\u0902\u091c\u093f\u092f\u094b\u0902 \u0915\u0940 \u0924\u0941\u0932\u0928\u093e \u092e\u0947\u0902 \u0927\u0940\u092e\u0940 \u0916\u094b\u091c \u0915\u0940 \u0938\u0902\u092d\u093e\u0935\u0928\u093e \u0939\u094b\u0924\u0940 \u0939\u0948\u0964<\/li>\n<\/ul>\n<h3>2. \u0915\u094d\u0932\u0938\u094d\u091f\u0930\u094d\u0921 \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u0915\u0947 \u092a\u094d\u0930\u092d\u093e\u0935<\/h3>\n<p>\u0905\u0927\u093f\u0915\u093e\u0902\u0936 \u0906\u0930\u094d\u0915\u093f\u091f\u0947\u0915\u094d\u091a\u0930 \u092e\u0947\u0902, \u092a\u094d\u0930\u093e\u0925\u092e\u093f\u0915 \u0915\u0941\u0902\u091c\u0940 \u0915\u094d\u0932\u0938\u094d\u091f\u0930\u094d\u0921 \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u0915\u094b \u092a\u0930\u093f\u092d\u093e\u0937\u093f\u0924 \u0915\u0930\u0924\u0940 \u0939\u0948\u0964 \u0907\u0938\u0915\u093e \u092e\u0924\u0932\u092c \u0939\u0948 \u0915\u093f \u0935\u093e\u0938\u094d\u0924\u0935\u093f\u0915 \u0921\u0947\u091f\u093e \u092a\u0902\u0915\u094d\u0924\u093f\u092f\u093e\u0901 \u0915\u0941\u0902\u091c\u0940 \u0915\u0947 \u0915\u094d\u0930\u092e \u092e\u0947\u0902 \u092d\u094c\u0924\u093f\u0915 \u0930\u0942\u092a \u0938\u0947 \u0938\u094d\u091f\u094b\u0930 \u0939\u094b\u0924\u0940 \u0939\u0948\u0902\u0964 \u092f\u0926\u093f \u0906\u092a\u0915\u0947 \u0908\u0906\u0930\u0921\u0940 \u0938\u0947 \u092f\u0939 \u092c\u0924\u093e\u092f\u093e \u091c\u093e\u0924\u093e \u0939\u0948 \u0915\u093f \u0915\u094d\u0935\u0947\u0930\u0940 \u0905\u0915\u094d\u0938\u0930 \u090f\u0915 \u0935\u093f\u0936\u093f\u0937\u094d\u091f \u092a\u094d\u0930\u093e\u0915\u0943\u0924\u093f\u0915 \u0932\u0915\u094d\u0937\u0923 \u0926\u094d\u0935\u093e\u0930\u093e \u092b\u093c\u093f\u0932\u094d\u091f\u0930 \u0915\u0930\u0924\u0940 \u0939\u0948\u0902, \u0924\u094b \u0906\u092a\u0915\u094b \u092a\u0940\u0915\u0947 \u092a\u0930\u093f\u092d\u093e\u0937\u093e \u0915\u094b \u0926\u094b\u092c\u093e\u0930\u093e \u0926\u0947\u0916\u0928\u0947 \u0915\u0940 \u0906\u0935\u0936\u094d\u092f\u0915\u0924\u093e \u0939\u094b \u0938\u0915\u0924\u0940 \u0939\u0948 \u092f\u093e \u0907\u0938 \u092c\u093e\u0924 \u0915\u094b \u0938\u094d\u0935\u0940\u0915\u093e\u0930 \u0915\u0930\u0928\u093e \u0939\u094b\u0917\u093e \u0915\u093f \u0915\u094d\u0932\u0938\u094d\u091f\u0930\u094d\u0921 \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u090f\u0915 \u092a\u094d\u0930\u0915\u093e\u0930 \u0915\u0940 \u0915\u094d\u0935\u0947\u0930\u0940 \u0915\u0947 \u0932\u093f\u090f \u0905\u0928\u0941\u0915\u0942\u0932\u093f\u0924 \u0939\u094b\u0917\u093e, \u091c\u092c\u0915\u093f \u0938\u0947\u0915\u0947\u0902\u0921\u0930\u0940 \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u0905\u0928\u094d\u092f \u0915\u094d\u0935\u0947\u0930\u0940 \u0915\u094b \u0938\u0902\u092d\u093e\u0932\u0947\u0902\u0917\u0947\u0964<\/p>\n<h2>\ud83d\udd17 \u0935\u093f\u0926\u0947\u0936\u0940 \u0915\u0941\u0902\u091c\u0940 \u0905\u0928\u0941\u0915\u0942\u0932\u0928<\/h2>\n<p>\u0935\u093f\u0926\u0947\u0936\u0940 \u0915\u0941\u0902\u091c\u093f\u092f\u093e\u0901 (\u090f\u092b\u0915\u0947) \u091f\u0947\u092c\u0932\u094b\u0902 \u0915\u0947 \u092c\u0940\u091a \u0938\u0902\u092c\u0902\u0927\u094b\u0902 \u0915\u094b \u092a\u0930\u093f\u092d\u093e\u0937\u093f\u0924 \u0915\u0930\u0924\u0940 \u0939\u0948\u0902\u0964 \u092f\u0926\u093f \u0907\u0928\u094d\u0939\u0947\u0902 \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u0928\u0939\u0940\u0902 \u0915\u093f\u092f\u093e \u0917\u092f\u093e \u0939\u0948, \u0924\u094b \u092f\u0947 \u092a\u094d\u0930\u0926\u0930\u094d\u0936\u0928 \u0915\u0947 \u092c\u0949\u091f\u0932\u0928\u0947\u0915 \u0915\u093e \u0938\u092c\u0938\u0947 \u0906\u092e \u0938\u094d\u0930\u094b\u0924 \u0939\u0948\u0902\u0964 \u091c\u092c \u0906\u092a \u0926\u094b \u091f\u0947\u092c\u0932\u094b\u0902 \u0915\u094b \u091c\u094b\u0921\u093c\u0924\u0947 \u0939\u0948\u0902, \u0924\u094b \u0921\u0947\u091f\u093e\u092c\u0947\u0938 \u0907\u0902\u091c\u0928 \u0915\u094b \u090f\u092b\u0915\u0947 \u0915\u0949\u0932\u092e \u0915\u0947 \u0906\u0927\u093e\u0930 \u092a\u0930 \u092a\u0902\u0915\u094d\u0924\u093f\u092f\u094b\u0902 \u0915\u094b \u092e\u0948\u091a \u0915\u0930\u0928\u093e \u0939\u094b\u0924\u093e \u0939\u0948\u0964 \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u0915\u0947 \u092c\u093f\u0928\u093e, \u092f\u0939 \u0911\u092a\u0930\u0947\u0936\u0928 \u0928\u0947\u0938\u094d\u091f\u0947\u0921 \u0932\u0942\u092a \u0938\u094d\u0915\u0948\u0928 \u092e\u0947\u0902 \u092c\u0926\u0932 \u091c\u093e\u0924\u093e \u0939\u0948, \u091c\u094b \u092c\u0921\u093c\u0947 \u0921\u0947\u091f\u093e\u0938\u0947\u091f \u0915\u0947 \u0932\u093f\u090f \u0917\u0923\u0928\u093e\u0924\u094d\u092e\u0915 \u0930\u0942\u092a \u0938\u0947 \u092e\u0939\u0902\u0917\u093e \u0939\u094b\u0924\u093e \u0939\u0948\u0964<\/p>\n<h3>1. \u0935\u093f\u0926\u0947\u0936\u0940 \u0915\u0941\u0902\u091c\u0940 \u0915\u0949\u0932\u092e \u0915\u093e \u0907\u0902\u0921\u0947\u0915\u094d\u0938\u093f\u0902\u0917<\/h3>\n<p>\u0939\u092e\u0947\u0936\u093e \u092c\u091a\u094d\u091a\u0947 \u0935\u093e\u0932\u0940 \u091f\u0947\u092c\u0932 \u092e\u0947\u0902 \u0935\u093f\u0926\u0947\u0936\u0940 \u0915\u0941\u0902\u091c\u0940 \u0915\u0949\u0932\u092e \u092a\u0930 \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u092c\u0928\u093e\u090f\u0902\u0964 \u0907\u0938\u0938\u0947 \u0907\u0902\u091c\u0928 \u0915\u094b \u092a\u0942\u0930\u0940 \u091f\u0947\u092c\u0932 \u0915\u094b \u0938\u094d\u0915\u0948\u0928 \u0915\u093f\u090f \u092c\u093f\u0928\u093e \u0938\u0902\u092c\u0902\u0927\u093f\u0924 \u092a\u0902\u0915\u094d\u0924\u093f\u092f\u094b\u0902 \u0915\u094b \u0924\u0947\u091c\u0940 \u0938\u0947 \u0922\u0942\u0902\u0922\u0928\u0947 \u092e\u0947\u0902 \u0938\u0915\u094d\u0937\u092e \u0939\u094b\u0924\u093e \u0939\u0948\u0964<\/p>\n<table border=\"1\" cellpadding=\"5\" cellspacing=\"0\" style=\"border-collapse: collapse; width: 100%;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>\u092a\u0930\u093f\u0926\u0943\u0936\u094d\u092f<\/th>\n<th>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u8981\u4ef6<\/th>\n<th>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u4e00\u5bfe\u591a\uff08\u5b50\uff09<\/td>\n<td>\u5b50\u30c6\u30fc\u30d6\u30eb\u306eFK\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8a2d\u5b9a<\/td>\n<td>\u89aa\u30c7\u30fc\u30bf\u306e\u9ad8\u901f\u691c\u7d22\u3092\u53ef\u80fd\u306b\u3059\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u591a\u5bfe\u4e00\uff08\u89aa\uff09<\/td>\n<td>\u89aa\u30c6\u30fc\u30d6\u30eb\u306ePK\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8a2d\u5b9a\uff08\u901a\u5e38\u30c7\u30d5\u30a9\u30eb\u30c8\uff09<\/td>\n<td>\u6a19\u6e96\u306e\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u52d5\u4f5c<\/td>\n<\/tr>\n<tr>\n<td>\u9023\u9396\u524a\u9664<\/td>\n<td>FK + \u89aaPK\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8a2d\u5b9a<\/td>\n<td>\u524a\u9664\u4e2d\u306b\u30c6\u30fc\u30d6\u30eb\u5168\u4f53\u3092\u30ed\u30c3\u30af\u3059\u308b\u306e\u3092\u9632\u3050<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>2. \u8907\u5408\u5916\u90e8\u30ad\u30fc<\/h3>\n<p>\u5834\u5408\u306b\u3088\u3063\u3066\u306f\u3001\u95a2\u4fc2\u304c\u8907\u6570\u306e\u5217\u306b\u4f9d\u5b58\u3059\u308b\uff08\u4f8b\uff1a\u89aa\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u306e\u8907\u5408\u30ad\u30fc\uff09\u3002\u3053\u306e\u5834\u5408\u3001\u89aa\u30ad\u30fc\u306e\u5217\u3068\u9806\u5e8f\u3068\u4e00\u81f4\u3059\u308b\u3088\u3046\u306b\u3001\u5b50\u30c6\u30fc\u30d6\u30eb\u306b\u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4f5c\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5185\u306e\u5217\u306e\u9806\u5e8f\u304c\u4e00\u81f4\u3057\u306a\u3044\u3068\u3001\u7d50\u5408\u64cd\u4f5c\u306b\u5f79\u7acb\u305f\u306a\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\ud83d\udd00 \u591a\u5bfe\u591a\u95a2\u4fc2\u306e\u51e6\u7406<\/h2>\n<p>\u591a\u5bfe\u591a\uff08M:N\uff09\u95a2\u4fc2\u306f\u3001\u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\u3092\u901a\u3058\u3066\u89e3\u6c7a\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u306f\u3001\u4e21\u65b9\u306e\u89aa\u30c6\u30fc\u30d6\u30eb\u3092\u6307\u3059\u5916\u90e8\u30ad\u30fc\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u3053\u3053\u3067\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u6226\u7565\u306f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u3068\u3063\u3066\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u72b6\u6cc1\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046<code>\u5b66\u751f<\/code>\u306b\u767b\u9332\u3059\u308b<code>\u30b3\u30fc\u30b9<\/code>\u3002\u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\u304c\u305d\u308c\u3089\u3092\u30ea\u30f3\u30af\u3057\u307e\u3059\u3002\u5b66\u751f\u306e\u3059\u3079\u3066\u306e\u30b3\u30fc\u30b9\u3092\u898b\u3064\u3051\u308b\u306b\u306f\u3001\u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\u3092\u52b9\u7387\u7684\u306b\u30af\u30a8\u30ea\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u53cc\u65b9\u5411\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff1a<\/strong>\u4e21\u65b9\u306e\u5916\u90e8\u30ad\u30fc\u5217\u3092\u500b\u5225\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5316\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5b66\u751f\u2192\u30b3\u30fc\u30b9\u307e\u305f\u306f\u30b3\u30fc\u30b9\u2192\u5b66\u751f\u306e\u3069\u3061\u3089\u304b\u3089\u3067\u3082\u95a2\u4fc2\u3092\u30af\u30a8\u30ea\u3067\u304d\u3001\u30d5\u30eb\u30b9\u30ad\u30e3\u30f3\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002<\/li>\n<li><strong>\u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff1a<\/strong>\u30af\u30a8\u30ea\u304c\u5e38\u306b\u7279\u5b9a\u306e\u5b66\u751f\u306e\u30b3\u30fc\u30b9\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\u3001(Student_ID, Course_ID) \u306b\u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u30012\u3064\u306e\u5225\u3005\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3088\u308a\u3082\u52b9\u7387\u7684\u3067\u3059\u30021\u56de\u306e\u691c\u7d22\u3067\u691c\u7d22\u6761\u4ef6\u3092\u30ab\u30d0\u30fc\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udcca \u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3068\u30ab\u30d0\u30fc\u30a4\u30f3\u30c7\u30c3\u30af\u30b9<\/h2>\n<p>\u3059\u3079\u3066\u306e\u30af\u30a8\u30ea\u304c1\u3064\u306e\u5217\u3067\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8907\u96d1\u306a\u30af\u30a8\u30ea\u306f\u3057\u3070\u3057\u3070\u8907\u6570\u306e\u6761\u4ef6\u3092\u542b\u307f\u307e\u3059\u3002\u3053\u3053\u304c\u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u5f37\u307f\u3067\u3059\u3002\u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u8907\u6570\u306e\u5217\u306b\u57fa\u3065\u3044\u3066\u69cb\u7bc9\u3055\u308c\u305f\u5358\u4e00\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3067\u3059\u3002<\/p>\n<h3>1. \u5217\u306e\u9806\u5e8f\u304c\u91cd\u8981\u3067\u3059<\/h3>\n<p>\u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5185\u306e\u5217\u306e\u9806\u5e8f\u306f\u4efb\u610f\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a8\u30f3\u30b8\u30f3\u306f\u3001\u7b49\u4fa1\u6761\u4ef6\u304c\u7d42\u4e86\u3059\u308b\u30dd\u30a4\u30f3\u30c8\u307e\u3067\u3057\u304b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u5229\u7528\u3067\u304d\u307e\u305b\u3093\u3002\u305f\u3068\u3048\u3070\u3001(City, State) \u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8a2d\u5b9a\u3057\u305f\u5834\u5408\u3001City\u3067\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u30af\u30a8\u30ea\u306f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002State\u306e\u307f\u3067\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u30af\u30a8\u30ea\u306f\u3001\u304a\u305d\u3089\u304f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u7121\u8996\u3057\u307e\u3059\u3002<\/p>\n<h3>2. \u30ab\u30d0\u30fc\u30a4\u30f3\u30c7\u30c3\u30af\u30b9<\/h3>\n<p>\u30ab\u30d0\u30fc\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u3001\u30af\u30a8\u30ea\u3092\u6e80\u305f\u3059\u305f\u3081\u306b\u5fc5\u8981\u306a\u3059\u3079\u3066\u306e\u5217\uff08SELECT\u30ea\u30b9\u30c8\u3092\u542b\u3080\uff09\u3092\u542b\u307f\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306f\u30e1\u30a4\u30f3\u30c6\u30fc\u30d6\u30eb\uff08\u30d2\u30fc\u30d7\uff09\u306b\u30a2\u30af\u30bb\u30b9\u305b\u305a\u306b\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30c4\u30ea\u30fc\u304b\u3089\u76f4\u63a5\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u8aad\u307f\u53d6\u308a\u304c\u91cd\u3044\u64cd\u4f5c\u306b\u304a\u3044\u3066\u5927\u304d\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a\u3092\u3082\u305f\u3089\u3057\u307e\u3059\u3002<\/p>\n<h2>\u26a0\ufe0f \u0906\u092e \u0917\u0932\u0924\u093f\u092f\u093e\u0901 \u0914\u0930 \u0938\u0930\u094d\u0935\u094b\u0924\u094d\u0924\u092e \u092a\u094d\u0930\u0925\u093e\u090f\u0901<\/h2>\n<p>\u090f\u0915 \u0938\u0939\u0940 ERD \u0915\u0947 \u0938\u093e\u0925 \u092d\u0940, \u0915\u093e\u0930\u094d\u092f\u093e\u0928\u094d\u0935\u092f\u0928 \u092e\u0947\u0902 \u0917\u0932\u0924\u093f\u092f\u093e\u0901 \u092a\u094d\u0930\u0926\u0930\u094d\u0936\u0928 \u0915\u094b \u0915\u092e \u0915\u0930 \u0938\u0915\u0924\u0940 \u0939\u0948\u0902\u0964 \u0928\u093f\u0930\u094d\u092e\u093e\u0923 \u0915\u094b \u092d\u0902\u0921\u093e\u0930\u0923 \u092e\u0947\u0902 \u092c\u0926\u0932\u0924\u0947 \u0938\u092e\u092f \u092c\u091a\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0928\u0940\u091a\u0947 \u0906\u092e \u091c\u093e\u0932 \u0926\u093f\u090f \u0917\u090f \u0939\u0948\u0902\u0964<\/p>\n<ul>\n<li><strong>\u0905\u0924\u094d\u092f\u0927\u093f\u0915 \u0907\u0902\u0921\u0947\u0915\u094d\u0938\u093f\u0902\u0917:<\/strong> \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u0921\u093f\u0938\u094d\u0915 \u0938\u094d\u092a\u0947\u0938 \u0915\u093e \u0909\u092a\u092f\u094b\u0917 \u0915\u0930\u0924\u093e \u0939\u0948 \u0914\u0930 \u0932\u0947\u0916\u0928 \u0911\u092a\u0930\u0947\u0936\u0928 \u0915\u094b \u0927\u0940\u092e\u093e \u0915\u0930\u0924\u093e \u0939\u0948\u0964 \u0915\u0947\u0935\u0932 \u0909\u0928 \u0915\u0949\u0932\u092e \u0915\u094b \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u0915\u0930\u0947\u0902 \u091c\u094b \u0905\u0915\u094d\u0938\u0930 \u092a\u094d\u0930\u0936\u094d\u0928 \u092a\u0942\u091b\u0947 \u091c\u093e\u0924\u0947 \u0939\u0948\u0902 \u092f\u093e \u092a\u094d\u0930\u0924\u093f\u092c\u0902\u0927\u094b\u0902 \u0915\u0947 \u0932\u093f\u090f \u0909\u092a\u092f\u094b\u0917 \u0915\u093f\u090f \u091c\u093e\u0924\u0947 \u0939\u0948\u0902\u0964<\/li>\n<li><strong>\u0915\u092e \u091a\u092f\u0928\u0915\u094d\u0937\u092e\u0924\u093e:<\/strong> \u0915\u092e \u0915\u093e\u0930\u094d\u0921\u093f\u0928\u0948\u0932\u093f\u091f\u0940 \u0935\u093e\u0932\u0947 \u0915\u0949\u0932\u092e (\u0909\u0926\u093e\u0939\u0930\u0923 \u0915\u0947 \u0932\u093f\u090f \u092c\u0942\u0932\u093f\u092f\u0928 \u201cis_active\u201d \u092b\u094d\u0932\u0948\u0917) \u0915\u094b \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u0915\u0930\u0928\u093e \u0905\u0915\u094d\u0938\u0930 \u0905\u0915\u094d\u0937\u092e \u0939\u094b\u0924\u093e \u0939\u0948\u0964 \u0911\u092a\u094d\u091f\u093f\u092e\u093e\u0907\u091c\u093c\u0930 \u0915\u092d\u0940-\u0915\u092d\u0940 \u092a\u0942\u0930\u0940 \u091f\u0947\u092c\u0932 \u0938\u094d\u0915\u0948\u0928 \u0915\u0930\u0928\u0947 \u0915\u093e \u0928\u093f\u0930\u094d\u0923\u092f \u0932\u0947 \u0938\u0915\u0924\u093e \u0939\u0948, \u091c\u094b \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u092e\u0947\u0902 \u091c\u093e\u0928\u0947 \u0938\u0947 \u0924\u0947\u091c \u0939\u094b \u0938\u0915\u0924\u093e \u0939\u0948\u0964<\/li>\n<li><strong>\u0928\u0932\u094d\u0938 \u0915\u094b \u0928\u091c\u0930\u0905\u0902\u0926\u093e\u091c \u0915\u0930\u0928\u093e:<\/strong> \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u0907\u0902\u091c\u0928 \u0915\u0947 \u0906\u0927\u093e\u0930 \u092a\u0930 NULL \u092e\u093e\u0928\u094b\u0902 \u0915\u094b \u0905\u0932\u0917-\u0905\u0932\u0917 \u0924\u0930\u0940\u0915\u0947 \u0938\u0947 \u0938\u0902\u092d\u093e\u0932\u0924\u0947 \u0939\u0948\u0902\u0964 \u092f\u0939 \u0938\u0941\u0928\u093f\u0936\u094d\u091a\u093f\u0924 \u0915\u0930\u0947\u0902 \u0915\u093f \u0906\u092a\u0915\u0940 \u0915\u094d\u0935\u0947\u0930\u0940 \u0932\u0949\u091c\u093f\u0915 \u0906\u092a\u0915\u0947 \u0935\u093f\u0936\u093f\u0937\u094d\u091f \u0938\u0947\u091f\u0905\u092a \u092e\u0947\u0902 NULL \u0915\u094b \u0915\u0948\u0938\u0947 \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u0915\u093f\u092f\u093e \u091c\u093e\u0924\u093e \u0939\u0948, \u0907\u0938\u0915\u0947 \u092c\u093e\u0930\u0947 \u092e\u0947\u0902 \u0927\u094d\u092f\u093e\u0928 \u0930\u0916\u0947\u0964<\/li>\n<li><strong>\u092b\u094d\u0930\u0948\u0917\u092e\u0947\u0902\u091f\u0947\u0936\u0928:<\/strong> \u0938\u092e\u092f \u0915\u0947 \u0938\u093e\u0925, \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u092b\u094d\u0930\u0948\u0917\u092e\u0947\u0902\u091f\u0947\u0921 \u0939\u094b \u091c\u093e\u0924\u0947 \u0939\u0948\u0902\u0964 \u092a\u094d\u0930\u0926\u0930\u094d\u0936\u0928 \u0915\u094b \u0905\u0928\u0941\u0915\u0942\u0932 \u092c\u0928\u093e\u090f \u0930\u0916\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0928\u093f\u092f\u092e\u093f\u0924 \u0930\u0916\u0930\u0916\u093e\u0935 \u0915\u0940 \u0906\u0935\u0936\u094d\u092f\u0915\u0924\u093e \u0939\u094b\u0924\u0940 \u0939\u0948\u0964<\/li>\n<\/ul>\n<h2>\ud83d\udee0\ufe0f \u092a\u094d\u0930\u0926\u0930\u094d\u0936\u0928 \u092e\u0949\u0928\u093f\u091f\u0930\u093f\u0902\u0917 \u0914\u0930 \u0930\u0916\u0930\u0916\u093e\u0935<\/h2>\n<p>\u091c\u092c 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\u0915\u0930\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0928\u093f\u092f\u092e\u093f\u0924 \u0930\u0942\u092a \u0938\u0947 \u0915\u094d\u0935\u0947\u0930\u0940 \u0928\u093f\u0937\u094d\u092a\u093e\u0926\u0928 \u092f\u094b\u091c\u0928\u093e\u0913\u0902 \u0915\u0940 \u0938\u092e\u0940\u0915\u094d\u0937\u093e \u0915\u0930\u0947\u0902\u0964<\/p>\n<h3>1. \u0928\u093f\u0937\u094d\u092a\u093e\u0926\u0928 \u092f\u094b\u091c\u0928\u093e\u0913\u0902 \u0915\u093e \u0935\u093f\u0936\u094d\u0932\u0947\u0937\u0923 \u0915\u0930\u0947\u0902<\/h3>\n<p>\u201c\u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u0938\u094d\u0915\u0948\u0928\u201d \u092c\u0928\u093e\u092e \u201c\u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u0938\u0940\u0915\u201d \u091c\u0948\u0938\u0947 \u0911\u092a\u0930\u0947\u0936\u0928 \u0915\u0940 \u0924\u0932\u093e\u0936 \u0915\u0930\u0947\u0902\u0964 \u090f\u0915 \u0938\u0940\u0915 \u092a\u094d\u0930\u092d\u093e\u0935\u0940 \u0939\u0948; \u090f\u0915 \u0938\u094d\u0915\u0948\u0928 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\u092e\u093e\u092e\u0932\u0947<\/h3>\n<p>\u091c\u0948\u0938\u0947-\u091c\u0948\u0938\u0947 \u0906\u092a\u0915\u0947 \u0921\u0947\u091f\u093e \u0915\u093e \u0906\u0915\u093e\u0930 \u092c\u0922\u093c\u0924\u093e \u0939\u0948, \u0930\u0916\u0930\u0916\u093e\u0935 \u0915\u0940 \u0932\u093e\u0917\u0924 \u092c\u0922\u093c\u0924\u0940 \u0939\u0948\u0964 10,000 \u092a\u0902\u0915\u094d\u0924\u093f\u092f\u094b\u0902 \u0915\u0947 \u0938\u093e\u0925 \u0905\u091a\u094d\u091b\u093e \u0915\u093e\u092e \u0915\u0930\u0928\u0947 \u0935\u093e\u0932\u093e \u0907\u0902\u0921\u0947\u0915\u094d\u0938 1 \u0915\u0930\u094b\u0921\u093c \u092a\u0902\u0915\u094d\u0924\u093f\u092f\u094b\u0902 \u092a\u0930 \u090f\u0915 \u092c\u0949\u091f\u0932\u0928\u0947\u0915 \u092c\u0928 \u0938\u0915\u0924\u093e \u0939\u0948\u0964 \u091c\u0948\u0938\u0947-\u091c\u0948\u0938\u0947 \u0921\u0947\u091f\u093e\u0938\u0947\u091f \u0915\u093e \u0906\u0915\u093e\u0930 \u092c\u0922\u093c\u0924\u093e \u0939\u0948, \u0905\u092a\u0928\u0940 ERD-\u0906\u0927\u093e\u0930\u093f\u0924 \u0907\u0902\u0921\u0947\u0915\u094d\u0938\u093f\u0902\u0917 \u092a\u0948\u091f\u0930\u094d\u0928 \u0915\u0940 \u092a\u0941\u0928\u0930\u094d\u092e\u0942\u0932\u094d\u092f\u093e\u0902\u0915\u0928 \u0915\u0930\u0947\u0902\u0964 \u0907\u0902\u0921\u0947\u0915\u094d\u0938\u093f\u0902\u0917 \u0915\u0947 \u0938\u093e\u0925-\u0938\u093e\u0925 \u092a\u093e\u0930\u094d\u091f\u0940\u0936\u0928\u093f\u0902\u0917 \u0930\u0923\u0928\u0940\u0924\u093f\u092f\u093e\u0901 \u092d\u0940 \u0906\u0935\u0936\u094d\u092f\u0915 \u0939\u094b \u0938\u0915\u0924\u0940 \u0939\u0948\u0902\u0964<\/p>\n<h2>\ud83d\udd04 \u0938\u0902\u0930\u0947\u0916\u0923 \u0915\u093e \u0938\u093e\u0930\u093e\u0902\u0936<\/h2>\n<p>\u0905\u092a\u0928\u0940 \u0907\u0902\u0921\u0947\u0915\u094d\u0938\u093f\u0902\u0917 \u0930\u0923\u0928\u0940\u0924\u093f \u0915\u094b \u0905\u092a\u0928\u0940 ERD \u0938\u0902\u0930\u091a\u0928\u093e \u0915\u0947 \u0938\u093e\u0925 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\u0915\u0949\u092e\u094d\u092a\u094b\u091c\u093f\u091f \u0907\u0902\u0921\u0947\u0915\u094d\u0938 \u0915\u094b \u0905\u0928\u0941\u0915\u0942\u0932\u093f\u0924 \u0915\u0930\u0947\u0902\u0964<\/li>\n<\/ul>\n<p>\u0905\u092a\u0928\u0940 ERD \u0915\u0940 \u0938\u0902\u0930\u091a\u0928\u093e\u0924\u094d\u092e\u0915 \u0905\u0916\u0902\u0921\u0924\u093e \u0915\u093e \u0938\u092e\u094d\u092e\u093e\u0928 \u0915\u0930\u0915\u0947, \u0906\u092a \u090f\u0915 \u0921\u0947\u091f\u093e\u092c\u0947\u0938 \u092c\u0928\u093e\u0924\u0947 \u0939\u0948\u0902 \u091c\u094b \u0927\u0940\u0930\u0947-\u0927\u0940\u0930\u0947 \u092c\u0922\u093c\u0924\u0940 \u0939\u0948\u0964 \u0906\u092a \u0905\u0928\u093f\u092f\u094b\u091c\u093f\u0924 \u0907\u0902\u0921\u0947\u0915\u094d\u0938\u093f\u0902\u0917 \u0915\u0940 \u0906\u092e \u0917\u0932\u0924\u093f\u092f\u094b\u0902 \u0938\u0947 \u092c\u091a\u0924\u0947 \u0939\u0948\u0902 \u0914\u0930 \u092f\u0939 \u0938\u0941\u0928\u093f\u0936\u094d\u091a\u093f\u0924 \u0915\u0930\u0924\u0947 \u0939\u0948\u0902 \u0915\u093f \u0906\u092a\u0915\u0947 \u0905\u0928\u0941\u092a\u094d\u0930\u092f\u094b\u0917 \u0915\u0947 \u0935\u093f\u0915\u093e\u0938 \u0915\u0947 \u0938\u093e\u0925 \u0906\u092a\u0915\u0947 \u0921\u0947\u091f\u093e \u0915\u0940 \u092a\u0939\u0941\u0901\u091a \u0914\u0930 \u092a\u094d\u0930\u0926\u0930\u094d\u0936\u0928 \u092c\u0928\u093e \u0930\u0939\u0924\u093e \u0939\u0948\u0964 \u0907\u0938 \u0905\u0928\u0941\u0936\u093e\u0938\u093f\u0924 \u0926\u0943\u0937\u094d\u091f\u093f\u0915\u094b\u0923 \u0938\u0947 \u092f\u0939 \u0938\u0941\u0928\u093f\u0936\u094d\u091a\u093f\u0924 \u0939\u094b\u0924\u093e \u0939\u0948 \u0915\u093f \u0921\u0947\u091f\u093e\u092c\u0947\u0938 \u0906\u092a\u0915\u0947 \u0935\u094d\u092f\u093e\u0935\u0938\u093e\u092f\u093f\u0915 \u0924\u0930\u094d\u0915 \u0915\u093e \u0938\u092e\u0930\u094d\u0925\u0928 \u0915\u0930\u0924\u093e \u0939\u0948 \u092c\u093f\u0928\u093e \u092c\u0949\u091f\u0932\u0928\u0947\u0915 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