{"id":1628,"date":"2026-03-26T01:45:28","date_gmt":"2026-03-26T01:45:28","guid":{"rendered":"https:\/\/www.ez-knowledge.com\/ja\/enforcing-data-integrity-erd-constraints\/"},"modified":"2026-03-26T01:45:28","modified_gmt":"2026-03-26T01:45:28","slug":"enforcing-data-integrity-erd-constraints","status":"publish","type":"post","link":"https:\/\/www.ez-knowledge.com\/ja\/enforcing-data-integrity-erd-constraints\/","title":{"rendered":"\u53b3\u683c\u306aERD\u5236\u7d04\u306b\u3088\u308b\u30c7\u30fc\u30bf\u6574\u5408\u6027\u306e\u78ba\u4fdd"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Kawaii-style infographic summarizing data integrity through ERD constraints: features cute database characters, four integrity layers (Entity, Domain, Referential, User-Defined), core constraint types (Primary Key, Foreign Key, Unique, Not Null, Check), relationship cardinality examples (One-to-One, One-to-Many, Many-to-Many), normalization steps (1NF, 2NF, 3NF), and implementation tips, all in pastel colors with friendly icons for educational web content about database design best practices\" decoding=\"async\" src=\"https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/03\/kawaii-erd-data-integrity-constraints-infographic.jpg\"\/><\/figure>\n<\/div>\n<p>\u73fe\u4ee3\u306e\u30c7\u30fc\u30bf\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u304a\u3044\u3066\u3001\u60c5\u5831\u306e\u4fe1\u983c\u6027\u306f\u8a2d\u8a08\u6bb5\u968e\u3067\u7d44\u307f\u8fbc\u307e\u308c\u305f\u69cb\u9020\u7684\u4fdd\u8b77\u6a5f\u69cb\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u30c7\u30fc\u30bf\u6574\u5408\u6027\u306f\u5f8c\u304b\u3089\u8003\u3048\u308b\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u4fe1\u983c\u3067\u304d\u308b\u30b7\u30b9\u30c6\u30e0\u306e\u57fa\u76e4\u3067\u3059\u3002\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u95a2\u4fc2\u56f3\uff08ERD\uff09\u3092\u8a2d\u8a08\u3059\u308b\u969b\u306e\u76ee\u7684\u306f\u3001\u8150\u6557\u3001\u4e0d\u6574\u5408\u3001\u640d\u5931\u3092\u672c\u8cea\u7684\u306b\u9632\u3050\u305f\u3081\u306e\u30d6\u30eb\u30fc\u30d7\u30ea\u30f3\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u53b3\u683c\u306a\u5236\u7d04\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30a2\u30fc\u30ad\u30c6\u30af\u30c8\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u8ca0\u8377\u4e0b\u3084\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u9593\u3067\u4e88\u6e2c\u53ef\u80fd\u306b\u52d5\u4f5c\u3059\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u306e\u5f37\u5236\u7684\u306a\u30eb\u30fc\u30eb\u304c\u306a\u3051\u308c\u3070\u3001\u30c7\u30fc\u30bf\u306f\u4eba\u7684\u30df\u30b9\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d0\u30b0\u3001\u4e26\u884c\u30a2\u30af\u30bb\u30b9\u306e\u554f\u984c\u306b\u8106\u5f31\u306b\u306a\u308a\u307e\u3059\u3002\u9069\u5207\u306b\u69cb\u9020\u5316\u3055\u308c\u305fERD\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30ed\u30b8\u30c3\u30af\u3068\u30b9\u30c8\u30ec\u30fc\u30b8\u5c64\u306e\u9593\u306e\u5951\u7d04\u306e\u5f79\u5272\u3092\u679c\u305f\u3057\u3001\u8a31\u53ef\u3055\u308c\u308b\u4e8b\u9805\u3068\u7981\u6b62\u3055\u308c\u308b\u4e8b\u9805\u3092\u660e\u78ba\u306b\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u53b3\u683c\u306a\u8a2d\u8a08\u539f\u5247\u3092\u901a\u3058\u3066\u4e00\u8cab\u6027\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u306b\u3064\u3044\u3066\u8a73\u8ff0\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30c7\u30fc\u30bf\u6574\u5408\u6027\u306e\u5c64\u3092\u7406\u89e3\u3059\u308b \ud83d\udd0d<\/h2>\n<p>\u6574\u5408\u6027\u306f\u5358\u4e00\u306e\u6982\u5ff5\u3067\u306f\u306a\u304f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u69cb\u9020\u306e\u7570\u306a\u308b\u30ec\u30d9\u30eb\u306b\u9069\u7528\u3055\u308c\u308b\u30eb\u30fc\u30eb\u306e\u96c6\u5408\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u5c64\u3092\u8a8d\u8b58\u3059\u308b\u3053\u3068\u3067\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u3092\u7d5e\u3063\u305f\u5236\u7d04\u306e\u5b9f\u88c5\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>1. \u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u6574\u5408\u6027<\/h3>\n<p>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u6574\u5408\u6027\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u3059\u3079\u3066\u306e\u884c\u304c\u4e00\u610f\u306b\u8b58\u5225\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3042\u3089\u3086\u308b\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb\u30e2\u30c7\u30eb\u306b\u304a\u3044\u3066\u6700\u3082\u57fa\u672c\u7684\u306a\u8981\u4ef6\u3067\u3059\u3002\u4e00\u610f\u306e\u8b58\u5225\u304c\u306a\u3051\u308c\u3070\u3001\u5909\u66f4\u3084\u95a2\u4fc2\u306e\u8ffd\u8de1\u306f\u4e0d\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u4e3b\u30ad\u30fc\uff1a<\/strong> \u30ec\u30b3\u30fc\u30c9\u306e\u4e00\u610f\u306e\u8b58\u5225\u5b50\u3068\u3057\u3066\u6307\u5b9a\u3055\u308c\u305f\u5217\u307e\u305f\u306f\u5217\u306e\u96c6\u5408\u3002<\/li>\n<li><strong>NULL\u4e0d\u53ef\uff1a<\/strong> \u4e3b\u30ad\u30fc\u5217\u306b\u306fNULL\u5024\u3092\u542b\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u305a\u3001\u3059\u3079\u3066\u306e\u30ec\u30b3\u30fc\u30c9\u304c\u5b58\u5728\u3059\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u4e00\u610f\u6027\uff1a<\/strong> 2\u3064\u306e\u884c\u304c\u540c\u3058\u4e3b\u30ad\u30fc\u5024\u3092\u5171\u6709\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<h3>2. \u30c9\u30e1\u30a4\u30f3\u6574\u5408\u6027<\/h3>\n<p>\u30c9\u30e1\u30a4\u30f3\u6574\u5408\u6027\u306f\u3001\u7279\u5b9a\u306e\u5217\u306b\u683c\u7d0d\u3067\u304d\u308b\u5024\u3092\u5236\u9650\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u304c\u578b\u3001\u7bc4\u56f2\u3001\u5f62\u5f0f\u306a\u3069\u306e\u4e88\u60f3\u3055\u308c\u308b\u30d1\u30e9\u30e1\u30fc\u30bf\u5185\u306b\u4fdd\u305f\u308c\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30c7\u30fc\u30bf\u578b\uff1a<\/strong> \u5e74\u9f62\u7528\u306e\u5217\u304c\u6574\u6570\u306e\u307f\u3092\u683c\u7d0d\u3057\u3001\u30c6\u30ad\u30b9\u30c8\u3092\u683c\u7d0d\u3057\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3002<\/li>\n<li><strong>\u30c1\u30a7\u30c3\u30af\u5236\u7d04\uff1a<\/strong> \u5024\u304c\u7279\u5b9a\u306e\u7bc4\u56f2\u5185\u306b\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u691c\u8a3c\u3059\u308b\u3053\u3068\u3001\u305f\u3068\u3048\u30700\u301c100\u306e\u9593\u306e\u30d1\u30fc\u30bb\u30f3\u30c6\u30fc\u30b8\u3002<\/li>\n<li><strong>\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\uff1a<\/strong> \u633f\u5165\u6642\u306b\u5024\u304c\u63d0\u4f9b\u3055\u308c\u306a\u3044\u5834\u5408\u306e\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u5024\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3002<\/li>\n<\/ul>\n<h3>3. \u53c2\u7167\u6574\u5408\u6027<\/h3>\n<p>\u3053\u308c\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u9593\u306e\u95a2\u4fc2\u304c\u4e00\u8cab\u6027\u3092\u4fdd\u3064\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u3042\u308b\u30c6\u30fc\u30d6\u30eb\u306e\u30ec\u30b3\u30fc\u30c9\u304c\u5225\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u6307\u3059\u5834\u5408\u3001\u5bfe\u8c61\u306e\u30ec\u30b3\u30fc\u30c9\u306f\u5b58\u5728\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5b58\u5728\u3057\u306a\u3044\u30c7\u30fc\u30bf\u3092\u53c2\u7167\u3059\u308b\u30aa\u30fc\u30d5\u30a1\u30f3\u30ec\u30b3\u30fc\u30c9\u3092\u9632\u304e\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u5916\u90e8\u30ad\u30fc\uff1a<\/strong> \u4ed6\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u4e3b\u30ad\u30fc\u306b\u30ea\u30f3\u30af\u3059\u308b\u5217\u3002<\/li>\n<li><strong>\u30ab\u30b9\u30b1\u30fc\u30c9\u30eb\u30fc\u30eb\uff1a<\/strong> \u89aa\u30ec\u30b3\u30fc\u30c9\u304c\u5909\u66f4\u3055\u308c\u305f\u3068\u304d\u306b\u5b9f\u884c\u3059\u308b\u30a2\u30af\u30b7\u30e7\u30f3\uff08\u524a\u9664\u307e\u305f\u306f\u66f4\u65b0\uff09\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3002<\/li>\n<li><strong>NULL\u306e\u6271\u3044\uff1a<\/strong> \u95a2\u4fc2\u304c\u30aa\u30d7\u30b7\u30e7\u30f3\uff08NULL\u53ef\uff09\u304b\u5fc5\u9808\u304b\u3092\u6c7a\u5b9a\u3059\u308b\u3053\u3068\u3002<\/li>\n<\/ul>\n<h3>4. \u30e6\u30fc\u30b6\u30fc\u5b9a\u7fa9\u6574\u5408\u6027<\/h3>\n<p>\u3053\u308c\u3089\u306f\u6a19\u6e96\u7684\u306a\u30ab\u30c6\u30b4\u30ea\u306b\u5f53\u3066\u306f\u307e\u3089\u306a\u3044\u30d3\u30b8\u30cd\u30b9\u56fa\u6709\u306e\u30eb\u30fc\u30eb\u3067\u3059\u3002\u8a2d\u8a08\u307e\u305f\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u5185\u3067\u30ab\u30b9\u30bf\u30e0\u30ed\u30b8\u30c3\u30af\u3092\u5fc5\u8981\u3068\u3059\u308b\u5834\u5408\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30ab\u30b9\u30bf\u30e0\u691c\u8a3c\uff1a<\/strong>\u65e5\u4ed8\u304c\u672a\u6765\u306b\u306a\u3063\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/li>\n<li><strong>\u6761\u4ef6\u4ed8\u304d\u30ed\u30b8\u30c3\u30af\uff1a<\/strong>\u30b9\u30c6\u30fc\u30bf\u30b9\u304c\u300c\u30ad\u30e3\u30f3\u30bb\u30eb\u6e08\u307f\u300d\u306e\u5834\u5408\u3001\u4ed6\u306e\u652f\u6255\u3044\u8a18\u9332\u306f\u8a31\u53ef\u3055\u308c\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<h2>\u30b3\u30a2ERD\u5236\u7d04\u3068\u305d\u306e\u5f71\u97ff \ud83e\uddf1<\/h2>\n<p>ERD\u306f\u3053\u308c\u3089\u306e\u5236\u7d04\u3092\u53ef\u8996\u5316\u3057\u3001\u958b\u767a\u8005\u3084\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u304c\u78ba\u8a8d\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u8868\u306f\u4e00\u822c\u7684\u306a\u5236\u7d04\u3001\u305d\u306e\u76ee\u7684\u3001\u304a\u3088\u3073\u30c7\u30fc\u30bf\u6574\u5408\u6027\u3078\u306e\u5f71\u97ff\u3092\u6982\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5236\u7d04\u306e\u7a2e\u985e<\/th>\n<th>\u6a5f\u80fd<\/th>\n<th>\u9069\u7528\u30dd\u30a4\u30f3\u30c8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u4e3b\u30ad\u30fc<\/td>\n<td>\u884c\u3092\u4e00\u610f\u306b\u8b58\u5225\u3059\u308b<\/td>\n<td>\u30c6\u30fc\u30d6\u30eb\u5b9a\u7fa9<\/td>\n<\/tr>\n<tr>\n<td>\u5916\u90e8\u30ad\u30fc<\/td>\n<td>\u30c6\u30fc\u30d6\u30eb\u3092\u3064\u306a\u3052\u308b<\/td>\n<td>\u95a2\u4fc2\u7dda<\/td>\n<\/tr>\n<tr>\n<td>\u4e00\u610f\u5236\u7d04<\/td>\n<td>\u5217\u306b\u91cd\u8907\u5024\u3092\u8a31\u3055\u306a\u3044<\/td>\n<td>\u5217\u5b9a\u7fa9<\/td>\n<\/tr>\n<tr>\n<td>NULL\u8a31\u53ef\u3057\u306a\u3044<\/td>\n<td>\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u5024\u3092\u5fc5\u9808\u3068\u3059\u308b<\/td>\n<td>\u5217\u5b9a\u7fa9<\/td>\n<\/tr>\n<tr>\n<td>\u30c1\u30a7\u30c3\u30af\u5236\u7d04<\/td>\n<td>\u5024\u304c\u6761\u4ef6\u306b\u5408\u81f4\u3059\u308b\u304b\u691c\u8a3c\u3059\u308b<\/td>\n<td>\u5217\u307e\u305f\u306f\u30c6\u30fc\u30d6\u30eb\u5b9a\u7fa9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u3053\u308c\u3089\u306e\u5236\u7d04\u304c\u8a2d\u8a08\u6bb5\u968e\u3067\u9069\u5207\u306b\u5b9a\u7fa9\u3055\u308c\u308c\u3070\u3001\u57fa\u76e4\u3068\u306a\u308b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a8\u30f3\u30b8\u30f3\u304c\u81ea\u52d5\u7684\u306b\u305d\u308c\u3089\u3092\u9069\u7528\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30b3\u30fc\u30c9\u304b\u3089\u691c\u8a3c\u306e\u8ca0\u62c5\u304c\u8efd\u6e1b\u3055\u308c\u3001\u30d0\u30b0\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u8106\u5f31\u6027\u306e\u30ea\u30b9\u30af\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002<\/p>\n<h2>\u95a2\u4fc2\u306e\u57fa\u6570\u3068\u6574\u5408\u6027 \ud83d\udd04<\/h2>\n<p>ERD\u5185\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u3064\u306a\u3050\u7dda\u306f\u95a2\u4fc2\u3092\u8868\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u95a2\u4fc2\u306e\u57fa\u6570\u304c\u3001\u5fc5\u8981\u306a\u6574\u5408\u6027\u30eb\u30fc\u30eb\u306e\u53b3\u683c\u3055\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<h3>1\u5bfe1\u306e\u95a2\u4fc2<\/h3>\n<p>Table A\u306e\u30ec\u30b3\u30fc\u30c9\u304cTable B\u306e\u30ec\u30b3\u30fc\u30c9\u3068\u6b63\u78ba\u306b1\u3064\u3060\u3051\u4e00\u81f4\u3059\u308b\u5834\u5408\u306b\u767a\u751f\u3057\u307e\u3059\u3002\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3084\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u305f\u3081\u3001\u5927\u304d\u306a\u30c6\u30fc\u30d6\u30eb\u3092\u5206\u5272\u3059\u308b\u969b\u306b\u3088\u304f\u898b\u3089\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u5236\u7d04:<\/strong> \u4e21\u5074\u306f\u901a\u5e38\u3001\u5916\u90e8\u30ad\u30fc\u306b\u5bfe\u3057\u3066\u4e00\u610f\u6027\u3092\u5f37\u5236\u3059\u308b\u3002<\/li>\n<li><strong> \u4f8b:<\/strong> \u4eba\u7269\u3068\u305d\u306e\u30d1\u30b9\u30dd\u30fc\u30c8\u30021\u4eba\u306e\u4eba\u7269\u306f1\u3064\u306e\u30d1\u30b9\u30dd\u30fc\u30c8\u3092\u6301\u3064\uff1b1\u3064\u306e\u30d1\u30b9\u30dd\u30fc\u30c8\u306f1\u4eba\u306e\u4eba\u7269\u306b\u5c5e\u3059\u308b\u3002<\/li>\n<\/ul>\n<h3>1\u5bfe\u591a\u306e\u95a2\u4fc2<\/h3>\n<p>\u6700\u3082\u4e00\u822c\u7684\u306a\u95a2\u4fc2\u30bf\u30a4\u30d7\u3002Table A\u306e1\u3064\u306e\u30ec\u30b3\u30fc\u30c9\u306f\u3001Table B\u306e\u8907\u6570\u306e\u30ec\u30b3\u30fc\u30c9\u306b\u95a2\u9023\u4ed8\u3051\u3089\u308c\u308b\u3002<\/p>\n<ul>\n<li><strong>\u5236\u7d04:<\/strong> \u5916\u90e8\u30ad\u30fc\u306f\u300c\u591a\u300d\u5074\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u5b58\u5728\u3059\u308b\u3002<\/li>\n<li><strong>\u6574\u5408\u6027:<\/strong> \u5916\u90e8\u30ad\u30fc\u306f\u300c1\u300d\u5074\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u3042\u308b\u65e2\u5b58\u306e\u4e3b\u30ad\u30fc\u3092\u53c2\u7167\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/li>\n<li><strong> \u4f8b:<\/strong> \u9867\u5ba2\u3068\u305d\u306e\u6ce8\u6587\u30021\u4eba\u306e\u9867\u5ba2\u306f\u8907\u6570\u306e\u6ce8\u6587\u3092\u6301\u3064\uff1b\u6ce8\u6587\u306f1\u4eba\u306e\u9867\u5ba2\u306b\u5c5e\u3059\u308b\u3002<\/li>\n<\/ul>\n<h3>\u591a\u5bfe\u591a\u306e\u95a2\u4fc2<\/h3>\n<p>\u3053\u306e\u95a2\u4fc2\u3092\u89e3\u6d88\u3059\u308b\u306b\u306f\u3001\u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\u304c\u5fc5\u8981\u3067\u30012\u3064\u306e1\u5bfe\u591a\u306e\u63a5\u7d9a\u306b\u5206\u89e3\u3059\u308b\u3002<\/p>\n<ul>\n<li><strong>\u5236\u7d04:<\/strong> \u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\u306b\u306f\u8907\u5408\u4e3b\u30ad\u30fc\u307e\u305f\u306f\u4e00\u610f\u5236\u7d04\u304c\u542b\u307e\u308c\u3066\u304a\u308a\u3001\u91cd\u8907\u3057\u305f\u95a2\u9023\u3092\u9632\u3050\u3002<\/li>\n<li><strong>\u6574\u5408\u6027:<\/strong> \u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\u306b\u304a\u3051\u308b\u5faa\u74b0\u30c7\u30fc\u30bf\u3084\u91cd\u8907\u30a8\u30f3\u30c8\u30ea\u3092\u9632\u3050\u3002<\/li>\n<li><strong> \u4f8b:<\/strong> \u751f\u5f92\u3068\u6388\u696d\u3002\u751f\u5f92\u306f\u8907\u6570\u306e\u6388\u696d\u3092\u53d7\u8b1b\u3059\u308b\uff1b\u6388\u696d\u306b\u306f\u8907\u6570\u306e\u751f\u5f92\u304c\u3044\u308b\u3002<\/li>\n<\/ul>\n<h2>\u6b63\u898f\u5316\u3068\u30c7\u30fc\u30bf\u6574\u5408\u6027 \ud83d\udcd0<\/h2>\n<p>\u6b63\u898f\u5316\u306f\u3001\u30c7\u30fc\u30bf\u306e\u5197\u9577\u6027\u3092\u6e1b\u3089\u3057\u3001\u6574\u5408\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b\u30c7\u30fc\u30bf\u3092\u6574\u7406\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u3067\u3042\u308b\u3002\u3057\u3070\u3057\u3070\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u3068\u898b\u306a\u3055\u308c\u308b\u304c\u3001\u4e3b\u306b\u30c7\u30fc\u30bf\u6574\u5408\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306e\u6226\u7565\u3067\u3042\u308b\u3002<\/p>\n<h3>\u7b2c\u4e00\u6b63\u898f\u5f62\uff081NF\uff09<\/h3>\n<p>\u5404\u5217\u304c\u539f\u5b50\u7684\u306a\u5024\u3092\u542b\u3080\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u30021\u3064\u306e\u30bb\u30eb\u5185\u306b\u30ea\u30b9\u30c8\u3084\u914d\u5217\u3092\u542b\u3081\u306a\u3044\u3002<\/p>\n<ul>\n<li><strong> \u5229\u70b9:<\/strong> \u30af\u30a8\u30ea\u306e\u7c21\u7d20\u5316\u3068\u30c7\u30fc\u30bf\u578b\u306e\u4e00\u8cab\u6027\u3092\u78ba\u4fdd\u3059\u308b\u3002<\/li>\n<li><strong> \u9055\u53cd\u30ea\u30b9\u30af:<\/strong> 1\u3064\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u8907\u6570\u306e\u96fb\u8a71\u756a\u53f7\u3092\u4fdd\u5b58\u3059\u308b\u3068\u30011\u3064\u306e\u756a\u53f7\u3092\u66f4\u65b0\u3059\u308b\u3053\u3068\u304c\u96e3\u3057\u304f\u306a\u308b\u3002<\/li>\n<\/ul>\n<h3>\u7b2c\u4e8c\u6b63\u898f\u5f62\uff082NF\uff09<\/h3>\n<p>\u30c6\u30fc\u30d6\u30eb\u304c1NF\u306b\u3042\u308a\u3001\u3059\u3079\u3066\u306e\u975e\u30ad\u30fc\u5c5e\u6027\u304c\u4e3b\u30ad\u30fc\u306b\u5b8c\u5168\u306b\u4f9d\u5b58\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u8981\u6c42\u3059\u308b\u3002<\/p>\n<ul>\n<li><strong>\u5229\u70b9\uff1a<\/strong>\u90e8\u5206\u7684\u4f9d\u5b58\u95a2\u4fc2\u3092\u6392\u9664\u3059\u308b\u3002<\/li>\n<li><strong>\u9055\u53cd\u30ea\u30b9\u30af\uff1a<\/strong>\u9867\u5ba2\u304c\u5f15\u3063\u8d8a\u3057\u3057\u305f\u5834\u5408\u3001\u6ce8\u6587\u30c6\u30fc\u30d6\u30eb\u306b\u9867\u5ba2\u306e\u4f4f\u6240\u60c5\u5831\u3092\u4fdd\u5b58\u3059\u308b\u3068\u5197\u9577\u6027\u304c\u751f\u3058\u308b\u3002<\/li>\n<\/ul>\n<h3>\u7b2c\u4e09\u6b63\u898f\u5f62\uff083NF\uff09<\/h3>\n<p>\u30c6\u30fc\u30d6\u30eb\u304c2NF\u306b\u3042\u308a\u3001\u63a8\u79fb\u7684\u4f9d\u5b58\u95a2\u4fc2\u304c\u306a\u3044\u3053\u3068\u3092\u8981\u6c42\u3059\u308b\u3002<\/p>\n<ul>\n<li><strong>\u5229\u70b9\uff1a<\/strong>\u5c5e\u6027\u304c\u30ad\u30fc\u306b\u306e\u307f\u4f9d\u5b58\u3059\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u3002<\/li>\n<li><strong>\u9055\u53cd\u30ea\u30b9\u30af\uff1a<\/strong>\u90f5\u4fbf\u756a\u53f7\uff08\u90f5\u4fbf\u756a\u53f7\u304c\u90fd\u5e02\u3092\u6c7a\u5b9a\u3059\u308b\uff09\u306b\u3088\u3063\u3066\u90fd\u5e02\u304c\u6c7a\u5b9a\u3055\u308c\u308b\u5834\u5408\u3001\u9867\u5ba2\u30c6\u30fc\u30d6\u30eb\u306b\u90fd\u5e02\u540d\u3092\u4fdd\u5b58\u3059\u308b\u3068\u3001\u66f4\u65b0\u7570\u5e38\u304c\u751f\u3058\u308b\u3002<\/li>\n<\/ul>\n<h2>\u5805\u7262\u306a\u8a2d\u8a08\u306e\u305f\u3081\u306e\u5b9f\u88c5\u6226\u7565 \ud83d\udee0\ufe0f<\/h2>\n<p>\u3053\u308c\u3089\u306e\u6982\u5ff5\u3092\u9069\u7528\u3059\u308b\u306b\u306f\u3001\u30e2\u30c7\u30eb\u5316\u30d5\u30a7\u30fc\u30ba\u3067\u53b3\u5bc6\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u5fc5\u8981\u3067\u3042\u308b\u3002\u4ee5\u4e0b\u306e\u6226\u7565\u306f\u3001\u9ad8\u3044\u6574\u5408\u6027\u57fa\u6e96\u3092\u7dad\u6301\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u3002<\/p>\n<ul>\n<li><strong>\u660e\u78ba\u306a\u547d\u540d\u898f\u5247\uff1a<\/strong>\u5916\u90e8\u30ad\u30fc\u306b\u306f\u660e\u78ba\u306a\u540d\u524d\u3092\u4f7f\u7528\u3059\u308b\uff08\u4f8b\uff1a<code>user_id<\/code> \u3067\u306f\u306a\u304f <code>fk1<\/code>\uff09\u3068\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc\u6642\u306b\u95a2\u4fc2\u6027\u304c\u660e\u78ba\u306b\u306a\u308b\u3002<\/li>\n<li><strong>\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u5316\uff1a<\/strong>ERD\u306b\u30d3\u30b8\u30cd\u30b9\u30eb\u30fc\u30eb\u3092\u6ce8\u91c8\u3059\u308b\u3002\u6587\u8108\u306e\u306a\u3044\u5236\u7d04\u306f\u7dad\u6301\u304c\u96e3\u3057\u3044\u3002<\/li>\n<li><strong>\u4f5c\u6210\u524d\u306e\u691c\u8a3c\uff1a<\/strong>\u30b9\u30ad\u30fc\u30de\u79fb\u884c\u306e\u524d\u306b\u3001\u6f5c\u5728\u7684\u306a\u5b64\u7acb\u30ec\u30b3\u30fc\u30c9\u304c\u306a\u3044\u304b\u8a2d\u8a08\u3092\u691c\u8a3c\u3059\u308b\u3002<\/li>\n<li><strong>\u4e00\u6642\u7684\u306b\u5236\u7d04\u3092\u7121\u52b9\u5316\u3059\u308b\uff1a<\/strong>\u30d0\u30c3\u30c1\u30c7\u30fc\u30bf\u30ed\u30fc\u30c9\u6642\u306e\u307f\u6574\u5408\u6027\u30c1\u30a7\u30c3\u30af\u3092\u7121\u52b9\u5316\u3057\u3001\u3059\u3050\u306b\u518d\u6709\u52b9\u5316\u3057\u3066\u30c7\u30fc\u30bf\u54c1\u8cea\u3092\u691c\u8a3c\u3059\u308b\u3002<\/li>\n<li><strong>\u76e3\u67fb\u30ed\u30b0\uff1a<\/strong>\u91cd\u8981\u306a\u6574\u5408\u6027\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u5909\u66f4\u3092\u30ed\u30b0\u306b\u8a18\u9332\u3057\u3001\u8ab0\u304c\u3044\u3064\u30c7\u30fc\u30bf\u3092\u5909\u66f4\u3057\u305f\u304b\u3092\u8ffd\u8de1\u3059\u308b\u3002<\/li>\n<\/ul>\n<h2>\u5236\u7d04\u7ba1\u7406\u306b\u304a\u3051\u308b\u4e00\u822c\u7684\u306a\u843d\u3068\u3057\u7a74 \u26a0\ufe0f<\/h2>\n<p>\u3057\u3063\u304b\u308a\u3068\u3057\u305f\u8a08\u753b\u304c\u3042\u3063\u3066\u3082\u3001\u30a8\u30e9\u30fc\u306f\u767a\u751f\u3059\u308b\u3002\u4e00\u822c\u7684\u306a\u30df\u30b9\u3092\u8a8d\u8b58\u3059\u308b\u3053\u3068\u3067\u3001\u56de\u907f\u3067\u304d\u308b\u3002<\/p>\n<h3>1. \u5faa\u74b0\u4f9d\u5b58<\/h3>\n<p>\u30c6\u30fc\u30d6\u30ebA\u304c\u30c6\u30fc\u30d6\u30ebB\u306b\u4f9d\u5b58\u3057\u3001\u30c6\u30fc\u30d6\u30ebB\u304c\u30c6\u30fc\u30d6\u30ebA\u306b\u4f9d\u5b58\u3059\u308b\u72b6\u6cc1\u3092\u4f5c\u308b\u3053\u3068\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c6\u30fc\u30d6\u30eb\u4f5c\u6210\u6642\u306b\u30c7\u30c3\u30c9\u30ed\u30c3\u30af\u304c\u767a\u751f\u3059\u308b\u3002<\/p>\n<ul>\n<li><strong>\u89e3\u6c7a\u7b56\uff1a<\/strong>\u5916\u90e8\u30ad\u30fc\u5236\u7d04\u306a\u3057\u3067\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3057\u3001\u4e21\u65b9\u306e\u30c6\u30fc\u30d6\u30eb\u304c\u5b58\u5728\u3057\u305f\u5f8c\u306b\u5236\u7d04\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/li>\n<\/ul>\n<h3>2. \u904e\u5270\u306a\u5f37\u5236<\/h3>\n<p>\u67d4\u8edf\u6027\u304c\u5fc5\u8981\u306a\u5834\u6240\u306b\u53b3\u683c\u306a\u5236\u7d04\u3092\u9069\u7528\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u6b63\u5f53\u306a\u30d3\u30b8\u30cd\u30b9\u904b\u7528\u304c\u59a8\u3052\u3089\u308c\u308b\u3053\u3068\u304c\u3042\u308b\u3002<\/p>\n<ul>\n<li><strong>\u89e3\u6c7a\u7b56\uff1a<\/strong>\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u95a2\u4fc2\u306b\u306f\u3001NULL\u8a31\u5bb9\u306e\u5916\u90e8\u30ad\u30fc\u3092\u4f7f\u7528\u3057\u3001\u8907\u96d1\u306a\u8ad6\u7406\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u3067\u691c\u8a3c\u3092\u51e6\u7406\u3059\u308b\u3002<\/li>\n<\/ul>\n<h3>3. 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