{"id":1772,"date":"2026-03-24T11:47:14","date_gmt":"2026-03-24T11:47:14","guid":{"rendered":"https:\/\/www.go-diagram.com\/ja\/future-proof-database-scalable-erd-design-principles\/"},"modified":"2026-03-24T11:47:14","modified_gmt":"2026-03-24T11:47:14","slug":"future-proof-database-scalable-erd-design-principles","status":"publish","type":"post","link":"https:\/\/www.go-diagram.com\/ja\/future-proof-database-scalable-erd-design-principles\/","title":{"rendered":"ERD\u30ac\u30a4\u30c9\uff1a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u5c06\u6765\u306b\u5099\u3048\u3066\u8a2d\u8a08\u3059\u308b\uff1a\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306aERD\u8a2d\u8a08\u539f\u5247"},"content":{"rendered":"<p>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u7bc9\u3059\u308b\u3053\u3068\u306f\u3001\u8d85\u9ad8\u5c64\u30d3\u30eb\u306e\u57fa\u790e\u3092\u7bc9\u304f\u3053\u3068\u3068\u4f3c\u3066\u3044\u307e\u3059\u3002\u56f3\u9762\u306b\u6b20\u9665\u304c\u3042\u308b\u5834\u5408\u3001\u69cb\u9020\u306f\u3084\u304c\u3066\u5727\u529b\u306b\u8010\u3048\u3089\u308c\u305a\u4e80\u88c2\u304c\u5165\u308a\u307e\u3059\u3002\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u95a2\u4fc2\u56f3\uff08ERD\uff09\u304c\u305d\u306e\u56f3\u9762\u3067\u3059\u3002ERD\u306f\u3001\u30c7\u30fc\u30bf\u304c\u3069\u306e\u3088\u3046\u306b\u63a5\u7d9a\u3055\u308c\u3001\u6d41\u308c\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5185\u3067\u6c38\u7d9a\u5316\u3055\u308c\u308b\u304b\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u6570\u304c\u5897\u52a0\u3057\u3001\u30c7\u30fc\u30bf\u91cf\u304c\u6025\u5897\u3059\u308b\u4e2d\u3067\u3001\u9759\u7684\u306a\u8a2d\u8a08\u306f\u3057\u3070\u3057\u3070\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u306a\u308a\u307e\u3059\u3002\u9577\u671f\u7684\u306a\u8010\u4e45\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u521d\u671f\u6bb5\u968e\u304b\u3089\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306aERD\u8a2d\u8a08\u539f\u5247\u3092\u63a1\u7528\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001\u6301\u7d9a\u53ef\u80fd\u306a\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u6280\u8853\u7684\u6226\u7565\u3092\u691c\u8a0e\u3057\u307e\u3059\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Infographic illustrating scalable ERD design principles for future-proof databases, featuring core components (entities, attributes, relationships, cardinality), normalization levels (1NF-3NF), indexing strategies (primary, secondary, composite, covering), horizontal scaling techniques (sharding, partitioning), and best practices checklist, presented in clean flat design with pastel accent colors and rounded icons\" decoding=\"async\" src=\"https:\/\/www.go-diagram.com\/wp-content\/uploads\/2026\/03\/scalable-erd-design-principles-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\u306e\u6838\u3092\u7406\u89e3\u3059\u308b \ud83e\uddf1<\/h2>\n<p>\u5177\u4f53\u7684\u306a\u6226\u7565\u306b\u53d6\u308a\u7d44\u3080\u524d\u306b\u3001ERD\u304c\u4f55\u3092\u8868\u3057\u3066\u3044\u308b\u304b\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002ERD\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u8ad6\u7406\u69cb\u9020\u3092\u53ef\u8996\u5316\u3057\u307e\u3059\u3002\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\uff08\u30c6\u30fc\u30d6\u30eb\uff09\u3001\u5c5e\u6027\uff08\u30ab\u30e9\u30e0\uff09\u3001\u95a2\u4fc2\uff08\u30ad\u30fc\uff09\u3092\u30de\u30c3\u30d4\u30f3\u30b0\u3057\u307e\u3059\u3002\u9069\u5207\u306b\u8a2d\u8a08\u3055\u308c\u305f\u30e2\u30c7\u30eb\u306f\u3001\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u53d6\u3063\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u300c\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u300d\u306f\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u8aad\u307f\u8fbc\u307f\u304c\u91cd\u3044\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3068\u66f8\u304d\u8fbc\u307f\u304c\u91cd\u3044\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u6700\u9069\u5316\u306e\u65b9\u6cd5\u304c\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e3b\u306a\u69cb\u6210\u8981\u7d20\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p>\n<ul>\n<li><strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\uff1a<\/strong>\u30e6\u30fc\u30b6\u30fc\u3001\u6ce8\u6587\u3001\u88fd\u54c1\u306a\u3069\u3001\u4e3b\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3002<\/li>\n<li><strong>\u5c5e\u6027\uff1a<\/strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u5b9a\u7fa9\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3001\u4f8b\u3048\u3070\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3084\u4fa1\u683c\u306a\u3069\u3002<\/li>\n<li><strong>\u95a2\u4fc2\uff1a<\/strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3069\u3046\u3057\u306e\u76f8\u4e92\u4f5c\u7528\u3067\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u5916\u90e8\u30ad\u30fc\u306b\u3088\u3063\u3066\u5b9a\u7fa9\u3055\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u57fa\u6570\uff1a<\/strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u9593\u306e\u6570\u5024\u7684\u306a\u95a2\u4fc2\uff081\u5bfe1\u30011\u5bfe\u591a\u3001\u591a\u5bfe\u591a\uff09\u3002<\/li>\n<\/ul>\n<h2>\u6b63\u898f\u5316\uff1a\u5197\u9577\u6027\u3068\u901f\u5ea6\u306e\u30d0\u30e9\u30f3\u30b9 \u2696\ufe0f<\/h2>\n<p>\u6b63\u898f\u5316\u306f\u3001\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\u3059\u3002\u3057\u3070\u3057\u3070\u53b3\u683c\u306a\u30eb\u30fc\u30eb\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059\u304c\u3001\u5b9f\u969b\u306b\u306f\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u3067\u3059\u3002\u9ad8\u3044\u6b63\u898f\u5316\u306f\u7570\u5e38\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u307e\u3059\u304c\u3001\u7d50\u5408\uff08JOIN\uff09\u306b\u3088\u3063\u3066\u30af\u30a8\u30ea\u306e\u8907\u96d1\u6027\u304c\u5897\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u4f4e\u6b63\u898f\u5316\uff08\u975e\u6b63\u898f\u5316\uff09\u306f\u8aad\u307f\u53d6\u308a\u3092\u9ad8\u901f\u5316\u3057\u307e\u3059\u304c\u3001\u30c7\u30fc\u30bf\u306e\u4e0d\u6574\u5408\u306e\u30ea\u30b9\u30af\u304c\u9ad8\u307e\u308a\u307e\u3059\u3002<\/p>\n<h3>\u6b63\u898f\u5316\u306e\u6bb5\u968e<\/h3>\n<p>\u6a19\u6e96\u5f62\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u3069\u3053\u3067\u6b62\u3081\u308b\u304b\u3092\u5224\u65ad\u3067\u304d\u307e\u3059\u3002\u5404\u5f62\u5f0f\u306f\u7279\u5b9a\u306e\u30c7\u30fc\u30bf\u7570\u5e38\u306b\u5bfe\u51e6\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u7b2c\u4e00\u6b63\u898f\u5f62\uff081NF\uff09\uff1a<\/strong>\u539f\u5b50\u6027\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u5404\u30ab\u30e9\u30e0\u306b\u306f\u5206\u5272\u3067\u304d\u306a\u3044\u5024\u304c\u542b\u307e\u308c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5358\u4e00\u306e\u30bb\u30eb\u5185\u306b\u7e70\u308a\u8fd4\u3057\u30b0\u30eb\u30fc\u30d7\u3084\u914d\u5217\u3092\u542b\u3081\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/li>\n<li><strong>\u7b2c\u4e8c\u6b63\u898f\u5f62\uff082NF\uff09\uff1a<\/strong>1NF\u3092\u57fa\u76e4\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u975e\u30ad\u30fc\u5c5e\u6027\u306f\u3001\u4e3b\u30ad\u30fc\u306e\u4e00\u90e8\u3067\u306f\u306a\u304f\u3001\u5168\u4f53\u306b\u4f9d\u5b58\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u308c\u306b\u3088\u308a\u90e8\u5206\u7684\u4f9d\u5b58\u304c\u6392\u9664\u3055\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u7b2c\u4e09\u6b63\u898f\u5f62\uff083NF\uff09\uff1a<\/strong>2NF\u3092\u57fa\u76e4\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u975e\u30ad\u30fc\u5c5e\u6027\u306f\u3001\u4ed6\u306e\u975e\u30ad\u30fc\u5c5e\u6027\u306b\u4f9d\u5b58\u3057\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002\u3053\u308c\u306b\u3088\u308a\u63a8\u79fb\u7684\u4f9d\u5b58\u304c\u6392\u9664\u3055\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u30dc\u30fc\u30a4\u30b9\u30fb\u30b3\u30c3\u30c9\u6b63\u898f\u5f62\uff08BCNF\uff09\uff1a<\/strong>3NF\u306e\u3088\u308a\u53b3\u683c\u306a\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3059\u3002\u6c7a\u5b9a\u8981\u56e0\u304c\u5019\u88dc\u30ad\u30fc\u3067\u306a\u3044\u5834\u5408\u3092\u6271\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u307b\u3068\u3093\u3069\u306e\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306a\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u30013NF\u306b\u5230\u9054\u3059\u308b\u3053\u3068\u304c\u6a19\u6e96\u7684\u306a\u76ee\u6a19\u3067\u3059\u3002\u305d\u308c\u4ee5\u4e0a\u9032\u3080\u3068\u3001\u7dad\u6301\u7ba1\u7406\u306e\u8ca0\u62c5\u304c\u5897\u3048\u308b\u4e00\u65b9\u3067\u3001\u5f97\u3089\u308c\u308b\u52b9\u679c\u306f\u6b21\u7b2c\u306b\u5c0f\u3055\u304f\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u5206\u6790\u7cfb\u304c\u91cd\u3044\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u5236\u5fa1\u3055\u308c\u305f\u975e\u6b63\u898f\u5316\u3078\u306e\u623b\u308a\u306f\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n<h3>\u6b63\u898f\u5316\u306e\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u8868<\/h3>\n<table>\n<thead>\n<tr>\n<th>\u6b63\u898f\u5316\u30ec\u30d9\u30eb<\/th>\n<th>\u4e3b\u306a\u5229\u70b9<\/th>\n<th>\u4e3b\u306a\u6b20\u70b9<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1NF<\/td>\n<td>\u539f\u5b50\u7684\u306a\u30c7\u30fc\u30bf\u30b9\u30c8\u30ec\u30fc\u30b8<\/td>\n<td>\u306a\u3057<\/td>\n<\/tr>\n<tr>\n<td>2NF<\/td>\n<td>\u90e8\u5206\u7684\u4f9d\u5b58\u95a2\u4fc2\u3092\u6392\u9664\u3059\u308b<\/td>\n<td>\u3088\u308a\u591a\u304f\u306e\u7d50\u5408\u304c\u5fc5\u8981<\/td>\n<\/tr>\n<tr>\n<td>3NF<\/td>\n<td>\u63a8\u79fb\u7684\u4f9d\u5b58\u95a2\u4fc2\u3092\u6392\u9664\u3059\u308b<\/td>\n<td>\u7d50\u5408\u306e\u8907\u96d1\u6027\u306e\u5897\u52a0<\/td>\n<\/tr>\n<tr>\n<td>\u975e\u6b63\u898f\u5316<\/td>\n<td>\u9ad8\u901f\u306a\u8aad\u307f\u53d6\u308a\u30af\u30a8\u30ea<\/td>\n<td>\u30c7\u30fc\u30bf\u306e\u5197\u9577\u6027\u3068\u66f4\u65b0\u7570\u5e38<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u6210\u9577\u3068\u67d4\u8edf\u6027\u3092\u8003\u616e\u3057\u305f\u30b9\u30ad\u30fc\u30de\u8a2d\u8a08 \ud83d\udcc8<\/h2>\n<p>\u73fe\u5728\u306e\u72b6\u6cc1\u3060\u3051\u3092\u8003\u616e\u3059\u308b\u306e\u3067\u306f\u4e0d\u5341\u5206\u3067\u3059\u3002\u5c06\u6765\u306e\u30b9\u30ad\u30fc\u30de\u306e\u9032\u5316\u3092\u4e88\u6e2c\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u304c\u5909\u5316\u3059\u308b\u3068\u3001\u786c\u76f4\u3057\u305f\u69cb\u9020\u306f\u5d29\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u67d4\u8edf\u306a\u8a2d\u8a08\u306b\u3088\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u79fb\u884c\u3092\u5fc5\u8981\u3068\u305b\u305a\u306b\u62e1\u5f35\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>1. \u540d\u524d\u4ed8\u3051\u898f\u5247\u3068\u6a19\u6e96<\/h3>\n<p>\u4e00\u8cab\u6027\u306f\u4fdd\u5b88\u6027\u306b\u3068\u3063\u3066\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u6df7\u4e71\u3057\u305f\u540d\u524d\u4ed8\u3051\u306f\u6df7\u4e71\u3084\u30a8\u30e9\u30fc\u3092\u62db\u304d\u307e\u3059\u3002\u65e9\u671f\u306b\u6a19\u6e96\u3092\u5b9a\u3081\u3001\u30c1\u30fc\u30e0\u5168\u4f53\u3067\u5fb9\u5e95\u3057\u3066\u9075\u5b88\u3055\u305b\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u5358\u6570\u540d\u3092\u4f7f\u7528\u3059\u308b\uff1a<\/strong> \u30c6\u30fc\u30d6\u30eb\u306f\u5358\u4e00\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u8868\u3059\u3079\u304d\u3067\u3059\uff08\u4f8b\uff1a<code>user<\/code>\u3001\u8907\u6570\u5f62\u306e<code>users<\/code>).<\/li>\n<li><strong>\u4e00\u8cab\u3057\u305f\u533a\u5207\u308a\u6587\u5b57\uff1a<\/strong> \u30c6\u30fc\u30d6\u30eb\u540d\u3084\u30ab\u30e9\u30e0\u540d\u306b snake_case \u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u7570\u306a\u308b\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3084\u30c4\u30fc\u30eb\u9593\u3067\u306e\u4e92\u63db\u6027\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u660e\u78ba\u6027\u306e\u305f\u3081\u306e\u63a5\u982d\u8f9e\uff1a<\/strong> \u4f8b\u3048\u3070\u3001\u5916\u90e8\u30ad\u30fc\u306b\u306f <code>fk_<\/code>\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b\u306f <code>idx_<\/code> \u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u305d\u306e\u76ee\u7684\u304c\u660e\u78ba\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u4e88\u7d04\u8a9e\u3092\u907f\u3051\u308b:<\/strong> \u4ee5\u4e0b\u306e\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u7d76\u5bfe\u306b\u4f7f\u7528\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\uff1a<code>order<\/code>, <code>group<\/code>\u3001\u307e\u305f\u306f<code>select<\/code> \u3092\u5217\u540d\u3068\u3057\u3066\u4f7f\u7528\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ul>\n<h3>2. \u30c7\u30fc\u30bf\u578b\u3068\u7cbe\u5ea6<\/h3>\n<p>\u9069\u5207\u306a\u30c7\u30fc\u30bf\u578b\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u306f\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u5bb9\u91cf\u3068\u30af\u30a8\u30ea\u901f\u5ea6\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002\u3042\u307e\u308a\u306b\u4e00\u822c\u7684\u306a\u30c7\u30fc\u30bf\u578b\u306f\u30b9\u30da\u30fc\u30b9\u3092\u7121\u99c4\u306b\u3057\u3001\u51e6\u7406\u3092\u9045\u304f\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u6574\u6570\uff1a<\/strong> \u7279\u5b9a\u306e\u77ac\u9593\u306b\u306f<code>TINYINT<\/code> \u30d5\u30e9\u30b0\uff080-1\uff09\u3084\u5c0f\u3055\u306a\u30ab\u30a6\u30f3\u30c8\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002\u975e\u5e38\u306b\u5927\u304d\u306a\u30b9\u30b1\u30fc\u30eb\u3092\u60f3\u5b9a\u3059\u308b\u5834\u5408\u306b\u306e\u307f<code>BIGINT<\/code> \u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li><strong>\u6587\u5b57\u5217\uff1a<\/strong> \u77ed\u3044\u5024\u306b\u306f<code>TEXT<\/code> \u3092\u4f7f\u7528\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u77ed\u3044\u5024\u306e\u5834\u5408\u306f\u3001\u660e\u78ba\u306a\u9577\u3055\u3092\u6307\u5b9a\u3057\u3066<code>VARCHAR<\/code> \u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30b9\u30da\u30fc\u30b9\u3092\u7bc0\u7d04\u3057\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4f5c\u6210\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u65e5\u4ed8\uff1a<\/strong> \u7279\u5b9a\u306e\u77ac\u9593\u306b\u306f<code>TIMESTAMP<\/code> \u3092\u4f7f\u7528\u3057\u3001\u30ab\u30ec\u30f3\u30c0\u30fc\u4e0a\u306e\u65e5\u4ed8\u306b\u306f<code>DATE<\/code> \u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5e38\u306bUTC\u3067\u4fdd\u5b58\u3057\u3066\u3001\u30bf\u30a4\u30e0\u30be\u30fc\u30f3\u306e\u6df7\u4e71\u3092\u907f\u3051\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li><strong>\u5c0f\u6570\uff1a<\/strong> \u91d1\u878d\u30c7\u30fc\u30bf\u306e\u5834\u5408\u306f\u3001\u56db\u6368\u4e94\u5165\u8aa4\u5dee\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3067\u306f\u306a\u304f\u56fa\u5b9a\u5c0f\u6570\u70b9\u6570\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ul>\n<h2>\u95a2\u4fc2\u6027\u3068\u57fa\u6570\u7ba1\u7406 \ud83d\udd17<\/h2>\n<p>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u95a2\u4fc2\u6027\u304c\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u95a2\u4fc2\u6027\u304c\u9069\u5207\u306b\u7ba1\u7406\u3055\u308c\u306a\u3044\u3068\u3001\u5b64\u7acb\u3057\u305f\u30ec\u30b3\u30fc\u30c9\u3084\u30c7\u30fc\u30bf\u640d\u5931\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n<h3>1. \u5916\u90e8\u30ad\u30fc\u5236\u7d04<\/h3>\n<p>\u5916\u90e8\u30ad\u30fc\u306f\u53c2\u7167\u6574\u5408\u6027\u3092\u5f37\u5236\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u3042\u308b\u30c6\u30fc\u30d6\u30eb\u306e\u30ec\u30b3\u30fc\u30c9\u304c\u5b58\u5728\u3057\u306a\u3044\u30ec\u30b3\u30fc\u30c9\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u4e00\u90e8\u306e\u958b\u767a\u8005\u306f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u305f\u3081\u3053\u308c\u3089\u3092\u7121\u52b9\u306b\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u73fe\u4ee3\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a8\u30f3\u30b8\u30f3\u306f\u305d\u308c\u3089\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3067\u304d\u307e\u3059\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u3067\u306e\u30c1\u30a7\u30c3\u30af\u306b\u983c\u308b\u306e\u306f\u8aa4\u308a\u3092\u62db\u304d\u3084\u3059\u3044\u3067\u3059\u3002<\/p>\n<h3>2. \u591a\u5bfe\u591a\u95a2\u4fc2\u306e\u6271\u3044\u65b9<\/h3>\n<p>\u591a\u5bfe\u591a\u95a2\u4fc2\uff08\u4f8b\uff1a\u751f\u5f92\u3068\u6388\u696d\uff09\u306f\u30012\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u76f4\u63a5\u8868\u73fe\u3067\u304d\u307e\u305b\u3093\u3002\u7d50\u5408\u30c6\u30fc\u30d6\u30eb\uff08\u95a2\u9023\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\uff09\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u95a2\u9023\u3059\u308b\u4e21\u65b9\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u4e3b\u30ad\u30fc\u3092\u542b\u3080\u65b0\u3057\u3044\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/li>\n<li>\u4e21\u65b9\u306e\u5916\u90e8\u30ad\u30fc\u304b\u3089\u306a\u308b\u8907\u5408\u4e3b\u30ad\u30fc\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/li>\n<li>\u3053\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u4f7f\u3063\u3066\u3001\u767b\u9332\u65e5\u6642\u306a\u3069\u95a2\u4fc2\u6027\u56fa\u6709\u306e\u8ffd\u52a0\u5c5e\u6027\u3092\u4fdd\u5b58\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>3. \u30aa\u30d7\u30b7\u30e7\u30f3\u95a2\u4fc2\u3068\u5fc5\u9808\u95a2\u4fc2<\/h3>\n<p>\u95a2\u4fc2\u304c\u5fc5\u9808\u304b\u3069\u3046\u304b\u3092\u660e\u78ba\u306b\u5b9a\u7fa9\u3057\u3066\u304f\u3060\u3055\u3044\u3002<code>NULL<\/code>\u5916\u90e8\u30ad\u30fc\u5217\u306bNULL\u5024\u304c\u3042\u308b\u3053\u3068\u306f\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u95a2\u4fc2\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002\u3053\u306e\u6c7a\u5b9a\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u306e\u691c\u8a3c\u30ed\u30b8\u30c3\u30af\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002<\/p>\n<h2>\u8aad\u307f\u53d6\u308a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a\u306e\u305f\u3081\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u6226\u7565 \ud83c\udfce\ufe0f<\/h2>\n<p>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u30c7\u30fc\u30bf\u53d6\u5f97\u3092\u9ad8\u901f\u5316\u3059\u308b\u4e3b\u306a\u30e1\u30ab\u30cb\u30ba\u30e0\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b\u306f\u30b3\u30b9\u30c8\u304c\u304b\u304b\u308a\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u30c7\u30a3\u30b9\u30af\u5bb9\u91cf\u3092\u6d88\u8cbb\u3057\u3001\u66f8\u304d\u8fbc\u307f\u64cd\u4f5c\uff08\u633f\u5165\u3001\u66f4\u65b0\u3001\u524a\u9664\uff09\u3092\u9045\u304f\u3057\u307e\u3059\u3002<\/p>\n<h3>1. \u4e3b\u30ad\u30fc\u30a4\u30f3\u30c7\u30c3\u30af\u30b9<\/h3>\n<p>\u3059\u3079\u3066\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u306f\u4e3b\u30ad\u30fc\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u308c\u306f\u901a\u5e38\u30af\u30e9\u30b9\u30bf\u5316\u3055\u308c\u3066\u304a\u308a\u3001\u7269\u7406\u7684\u306a\u30c7\u30fc\u30bf\u304c\u30ad\u30fc\u306e\u9806\u5e8f\u3067\u683c\u7d0d\u3055\u308c\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u5909\u66f4\u3055\u308c\u306a\u3044\u5b89\u5b9a\u3057\u305f\u30ad\u30fc\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u89b3\u70b9\u304b\u3089\u3001\u30b5\u30ed\u30b2\u30fc\u30c8\u30ad\u30fc\uff08\u81ea\u52d5\u5897\u5206\u6574\u6570\uff09\u306f\u81ea\u7136\u30ad\u30fc\uff08\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306a\u3069\uff09\u3088\u308a\u3082\u512a\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>2. \u30bb\u30ab\u30f3\u30c0\u30ea\u30a4\u30f3\u30c7\u30c3\u30af\u30b9<\/h3>\n<p>\u975e\u4e3b\u30ad\u30fc\u5217\u3067\u306e\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3084\u30bd\u30fc\u30c8\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306b\u3001\u30bb\u30ab\u30f3\u30c0\u30ea\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u4e00\u822c\u7684\u306a\u30b7\u30ca\u30ea\u30aa\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p>\n<ul>\n<li>\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3067\u691c\u7d22\u3059\u308b\u5834\u5408\u3002<\/li>\n<li>\u30b9\u30c6\u30fc\u30bf\u30b9\u3084\u30ab\u30c6\u30b4\u30ea\u3067\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u5834\u5408\u3002<\/li>\n<li>\u65e5\u4ed8\u3067\u7d50\u679c\u3092\u4e26\u3079\u66ff\u3048\u308b\u5834\u5408\u3002<\/li>\n<\/ul>\n<h3>3. \u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9<\/h3>\n<p>\u8907\u6570\u306e\u5217\u3067\u30af\u30a8\u30ea\u3092\u884c\u3046\u5834\u5408\u3001\u500b\u5225\u306e\u5358\u4e00\u5217\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3088\u308a\u3082\u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u65b9\u304c\u52b9\u7387\u7684\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5185\u306e\u5217\u306e\u9806\u5e8f\u306f\u91cd\u8981\u3067\u3059\u3002\u6700\u3082\u9078\u629e\u6027\u306e\u9ad8\u3044\u5217\u3092\u6700\u521d\u306b\u914d\u7f6e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>4. \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\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\u306b\u30a2\u30af\u30bb\u30b9\u305b\u305a\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304b\u3089\u76f4\u63a5\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3067\u304d\u3001I\/O\u3092\u8457\u3057\u304f\u524a\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u6c34\u5e73\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u3092\u8003\u616e\u3057\u305f\u8a2d\u8a08 \ud83c\udf10<\/h2>\n<p>\u5782\u76f4\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\uff08\u5358\u4e00\u30b5\u30fc\u30d0\u30fc\u306b\u30d1\u30ef\u30fc\u3092\u8ffd\u52a0\uff09\u306b\u306f\u9650\u754c\u304c\u3042\u308a\u307e\u3059\u3002\u6700\u7d42\u7684\u306b\u306f\u3001\u30c7\u30fc\u30bf\u3092\u8907\u6570\u306e\u30ce\u30fc\u30c9\u306b\u5206\u6563\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002ERD\u8a2d\u8a08\u306f\u3053\u306e\u73fe\u5b9f\u3092\u8003\u616e\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n<h3>1. \u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u30ad\u30fc<\/h3>\n<p>\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u306f\u3001\u30c7\u30fc\u30bf\u3092\u8907\u6570\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u5206\u5272\u3059\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u30ad\u30fc\u306e\u9078\u629e\u306f\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002\u30c7\u30fc\u30bf\u30ed\u30fc\u30ab\u30ea\u30c6\u30a3\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u3001\u30af\u30a8\u30ea\u3067\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u30ad\u30fc\u3092\u9078\u3076\u3079\u304d\u3067\u3059\u3002\u3082\u3057\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u30ad\u30fc\u3092&#8221;<code>user_id<\/code>\u3001\u305d\u306e\u30e6\u30fc\u30b6\u30fc\u306e\u3059\u3079\u3066\u306e\u30c7\u30fc\u30bf\u3092\u5358\u4e00\u306e\u30ce\u30fc\u30c9\u3067\u7c21\u5358\u306b\u7167\u4f1a\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u826f\u3044\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u30ad\u30fc\uff1a<\/strong>\u9ad8\u3044\u57fa\u6570\u3001\u30af\u30a8\u30ea\u3067\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u3002<\/li>\n<li><strong>\u60aa\u3044\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u30ad\u30fc\uff1a<\/strong>\u4f4e\u3044\u57fa\u6570\uff08\u4f8b\uff1a<code>country_code<\/code>\uff09\u307e\u305f\u306f\u3081\u3063\u305f\u306b\u4f7f\u308f\u308c\u306a\u3044\u3002<\/li>\n<\/ul>\n<h3>2. \u30af\u30ed\u30b9\u30b7\u30e3\u30fc\u30c9\u7d50\u5408\u306e\u56de\u907f<\/h3>\n<p>\u7570\u306a\u308b\u30b7\u30e3\u30fc\u30c9\u9593\u306e\u7d50\u5408\u306f\u9ad8\u30b3\u30b9\u30c8\u3067\u8907\u96d1\u3067\u3059\u3002\u305d\u308c\u3089\u306e\u5fc5\u8981\u6027\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3088\u3046\u306b\u30b9\u30ad\u30fc\u30de\u3092\u8a2d\u8a08\u3057\u3066\u304f\u3060\u3055\u3044\u30022\u3064\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u30c7\u30fc\u30bf\u304c\u5fc5\u8981\u3067\u3001\u305d\u308c\u3089\u304c\u7570\u306a\u308b\u30b7\u30e3\u30fc\u30c9\u306b\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u30c7\u30fc\u30bf\u3092\u6b63\u898f\u5316\u3057\u306a\u3044\uff08\u30c7\u30ce\u30fc\u30de\u30e9\u30a4\u30ba\uff09\u3053\u3068\u3092\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u7d50\u5408\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001\u5fc5\u8981\u306a\u5916\u90e8\u30ad\u30fc\u60c5\u5831\u3092\u30c6\u30fc\u30d6\u30eb\u306b\u76f4\u63a5\u683c\u7d0d\u3057\u307e\u3059\u3002<\/p>\n<h3>3. \u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30cb\u30f3\u30b0<\/h3>\n<p>\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30cb\u30f3\u30b0\u306f\u3001\u5927\u304d\u306a\u30c6\u30fc\u30d6\u30eb\u3092\u3088\u308a\u5c0f\u3055\u304f\u7ba1\u7406\u3057\u3084\u3059\u3044\u90e8\u5206\u306b\u5206\u5272\u3057\u307e\u3059\u3002\u7bc4\u56f2\uff08\u65e5\u4ed8\uff09\u3001\u30ea\u30b9\u30c8\uff08\u30ab\u30c6\u30b4\u30ea\uff09\u3001\u30cf\u30c3\u30b7\u30e5\u306e\u3044\u305a\u308c\u304b\u3067\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30ed\u30b8\u30c3\u30af\u3092\u5927\u304d\u304f\u5909\u66f4\u305b\u305a\u306b\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u3068\u30af\u30a8\u30ea\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/p>\n<h2>\u30b9\u30ad\u30fc\u30de\u306e\u9032\u5316\u3068\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3 \ud83d\udd04<\/h2>\n<p>\u8981\u4ef6\u306f\u5909\u5316\u3057\u307e\u3059\u3002\u65b0\u3057\u3044\u6a5f\u80fd\u306b\u306f\u65b0\u3057\u3044\u30ab\u30e9\u30e0\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u53e4\u3044\u6a5f\u80fd\u306f\u975e\u63a8\u5968\u306b\u306a\u308a\u307e\u3059\u3002\u5805\u7262\u306aERD\u306f\u3001\u65e2\u5b58\u306e\u6a5f\u80fd\u3092\u7834\u58ca\u305b\u305a\u306b\u5909\u66f4\u306b\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>1. \u5f8c\u65b9\u4e92\u63db\u6027<\/h3>\n<p>\u65b0\u3057\u3044\u6a5f\u80fd\u3092\u8ffd\u52a0\u3059\u308b\u969b\u306f\u3001\u53e4\u3044\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u4f9d\u7136\u3068\u3057\u3066\u52d5\u4f5c\u3059\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u65b0\u3057\u3044\u30ab\u30e9\u30e0\u306f\u6700\u521d\u306bnullable\u3068\u3057\u3066\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5f90\u3005\u306b\u30c7\u30fc\u30bf\u3092\u57cb\u3081\u3066\u3044\u304d\u307e\u3059\u3002\u3059\u3050\u306b\u30ab\u30e9\u30e0\u3092\u524a\u9664\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u975e\u63a8\u5968\u3068\u3057\u3066\u30de\u30fc\u30af\u3057\u3001\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u671f\u9593\u4e2d\u306f\u4fdd\u6301\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>2. 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