{"id":1526,"date":"2026-03-27T17:16:10","date_gmt":"2026-03-27T17:16:10","guid":{"rendered":"https:\/\/www.viz-read.com\/ja\/erd-vs-schema-core-difference-developers\/"},"modified":"2026-03-27T17:16:10","modified_gmt":"2026-03-27T17:16:10","slug":"erd-vs-schema-core-difference-developers","status":"publish","type":"post","link":"https:\/\/www.viz-read.com\/ja\/erd-vs-schema-core-difference-developers\/","title":{"rendered":"ERD\u3068\u30b9\u30ad\u30fc\u30de\uff1a\u958b\u767a\u8005\u304c\u5fc5\u305a\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u6838\u5fc3\u7684\u306a\u9055\u3044\u3092\u7406\u89e3\u3059\u308b"},"content":{"rendered":"

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\n
\"Charcoal<\/figure>\n<\/div>\n

\u305d\u3082\u305d\u3082ERD\u3068\u306f\u4f55\u304b\uff1f \ud83d\udcd0<\/h2>\n

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    \n
  • \u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\uff1a<\/strong> \u3053\u308c\u3089\u306f\u73fe\u5b9f\u4e16\u754c\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3084\u6982\u5ff5\u3092\u8868\u3059\u3002\u5c0f\u58f2\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3068\u3057\u3066\u300c\u9867\u5ba2<\/em>, \u88fd\u54c1<\/em>\u300d\u3001\u307e\u305f\u306f\u300c\u6ce8\u6587<\/em>\u300d\u304c\u6319\u3052\u3089\u308c\u308b\u3002\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306f\u3001\u30c7\u30fc\u30bf\u5b87\u5b99\u306b\u304a\u3051\u308b\u540d\u8a5e\u3067\u3042\u308b\u3002<\/li>\n
  • \u5c5e\u6027\uff1a<\/strong> \u3053\u308c\u3089\u306f\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u8a18\u8ff0\u3059\u308b\u6027\u8cea\u3084\u7279\u5fb4\u3067\u3042\u308b\u3002\u305f\u3068\u3048\u3070\u300c\u9867\u5ba2<\/em>\u300d\u306e\u5834\u5408\u3001\u5c5e\u6027\u306b\u306f\u300c\u6c0f\u540d<\/em>, \u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9<\/em>\u300d\u3001\u307e\u305f\u306f\u300c\u767b\u9332\u65e5<\/em>\u300d\u304c\u542b\u307e\u308c\u308b\u3002\u5c5e\u6027\u306f\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306b\u3064\u3044\u3066\u4fdd\u5b58\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u30c7\u30fc\u30bf\u3092\u5b9a\u7fa9\u3059\u308b\u3002<\/li>\n
  • \u95a2\u4fc2\uff1a<\/strong> \u3053\u308c\u306f\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3069\u3046\u3057\u306e\u76f8\u4e92\u4f5c\u7528\u3092\u5b9a\u7fa9\u3059\u308b\u30021\u4eba\u306e\u9867\u5ba2\u304c\u591a\u6570\u306e\u6ce8\u6587\u3092\u884c\u3046\u306e\u304b\uff1f1\u3064\u306e\u88fd\u54c1\u304c\u8907\u6570\u306e\u30ab\u30c6\u30b4\u30ea\u306b\u5c5e\u3059\u308b\u306e\u304b\uff1f\u95a2\u4fc2\u306f\u3001\u540d\u8a5e\u3092\u3064\u306a\u3050\u52d5\u8a5e\u3067\u3042\u308b\u3002<\/li>\n<\/ul>\n

    ERD\u306e\u7f8e\u3057\u3055\u306f\u3001\u305d\u306e\u62bd\u8c61\u6027\u306b\u3042\u308b\u3002\u30c7\u30fc\u30bf\u304c\u6700\u7d42\u7684\u306bPostgreSQL\u3001MySQL\u3001\u307e\u305f\u306fNoSQL\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u30b9\u30c8\u30a2\u306b\u683c\u7d0d\u3055\u308c\u308b\u304b\u3069\u3046\u304b\u306f\u3001\u6c17\u306b\u3057\u306a\u3044\u3002\u60c5\u5831\u306e\u6574\u5408\u6027\u3068\u8ad6\u7406\u7684\u306a\u6d41\u308c\u306b\u306e\u307f\u95a2\u5fc3\u304c\u3042\u308b\u3002\u8868\u8a18\u30b9\u30bf\u30a4\u30eb\u306f\u3055\u307e\u3056\u307e\u3067\u3042\u308b\u304c\u3001\u30af\u30e9\u30a6\u30ba\u30d5\u30c3\u30c8\u8868\u8a18\u306f\u3001\u57fa\u6570\uff081\u5bfe1\u30011\u5bfe\u591a\u3001\u591a\u5bfe\u591a\uff09\u3092\u793a\u3059\u305f\u3081\u306e\u4e00\u822c\u7684\u306a\u6a19\u6e96\u3067\u3042\u308b\u3002\u3053\u306e\u8996\u899a\u7684\u8a00\u8a9e\u306b\u3088\u308a\u3001\u30b3\u30fc\u30c9\u304c1\u884c\u3082\u66f8\u304b\u308c\u308b\u524d\u3067\u3082\u3001\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u306e\u8ad6\u7406\u3092\u691c\u8a3c\u3067\u304d\u308b\u3002<\/p>\n

    ERD\u3092\u4f5c\u6210\u3059\u308b\u969b\u306e\u7126\u70b9\u306f\u6b63\u898f\u5316\u306b\u3042\u308b\u3002\u3053\u308c\u306f\u3001\u30c7\u30fc\u30bf\u306e\u91cd\u8907\u3092\u6e1b\u3089\u3057\u3001\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b\u30c7\u30fc\u30bf\u3092\u6574\u7406\u3059\u308b\u3053\u3068\u3092\u610f\u5473\u3059\u308b\u3002\u5927\u304d\u306a\u30c6\u30fc\u30d6\u30eb\u3092\u3001\u95a2\u9023\u6027\u306e\u3042\u308b\u5c0f\u3055\u306a\u30c6\u30fc\u30d6\u30eb\u306b\u5206\u5272\u3059\u308b\u65b9\u6cd5\u3092\u691c\u8a0e\u3057\u30011\u304b\u6240\u3067\u60c5\u5831\u3092\u66f4\u65b0\u3059\u308c\u3070\u3001\u305d\u308c\u304c\u91cd\u8981\u3068\u306a\u308b\u3059\u3079\u3066\u306e\u5834\u6240\u3067\u66f4\u65b0\u3055\u308c\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u3002ERD\u306f\u9818\u571f\u306e\u5730\u56f3\u3067\u3042\u308b\u3002\u9053\u3084\u30e9\u30f3\u30c9\u30de\u30fc\u30af\u306f\u793a\u3059\u304c\u3001\u5177\u4f53\u7684\u306a\u8217\u88c5\u7d20\u6750\u307e\u3067\u306f\u793a\u3055\u306a\u3044\u3002<\/p>\n

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    \u30b9\u30ad\u30fc\u30de\u306f\u4ee5\u4e0b\u306e\u6280\u8853\u7684\u8a73\u7d30\u3092\u5b9a\u7fa9\u3057\u307e\u3059\uff1a<\/p>\n

      \n
    • \u30c6\u30fc\u30d6\u30eb\uff1a<\/strong> ERD\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306f\u7269\u7406\u7684\u306a\u30c6\u30fc\u30d6\u30eb\u306b\u306a\u308a\u307e\u3059\u3002\u30b9\u30ad\u30fc\u30de\u306f\u30c6\u30fc\u30d6\u30eb\u540d\u3092\u6307\u5b9a\u3057\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u53b3\u683c\u306a\u547d\u540d\u898f\u5247\uff08\u4f8b\uff1asnake_case\uff09\u306b\u5f93\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n
    • \u30c7\u30fc\u30bf\u578b\uff1a<\/strong> \u5c5e\u6027\u3067\u3042\u308b Age<\/em> \u306f INT<\/code> \u307e\u305f\u306f SMALLINT<\/code>\u3002\u5c5e\u6027\u3067\u3042\u308b Email<\/em> \u306f\u7279\u5b9a\u306e\u9577\u3055\u5236\u9650\u3092\u6301\u3064 VARCHAR<\/code> \u306b\u306a\u308a\u307e\u3059\u3002\u5c5e\u6027\u3067\u3042\u308b Timestamp<\/em> \u306f TIMESTAMP WITH TIME ZONE<\/code> \u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u9078\u629e\u306f\u30b9\u30c8\u30ec\u30fc\u30b8\u9818\u57df\u3068\u30af\u30a8\u30ea\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002<\/li>\n
    • \u5236\u7d04\uff1a<\/strong> \u3053\u308c\u304cERD\u306e\u8ad6\u7406\u304c\u5f37\u5236\u3055\u308c\u308b\u5834\u6240\u3067\u3059\u3002\u4e3b\u30ad\u30fc\uff08PK\uff09\u306f\u4e00\u610f\u6027\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u5916\u90e8\u30ad\u30fc\uff08FK\uff09\u306f\u30c6\u30fc\u30d6\u30eb\u9593\u306e\u53c2\u7167\u6574\u5408\u6027\u3092\u7dad\u6301\u3057\u307e\u3059\u3002NOT NULL<\/code> \u5236\u7d04\u306f\u5fc5\u9808\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u5165\u529b\u3055\u308c\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u4e00\u610f\u5236\u7d04\u306f\u91cd\u8907\u30a8\u30f3\u30c8\u30ea\u306e\u9632\u6b62\u3092\u56f3\u308a\u307e\u3059\u3002<\/li>\n
    • \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff1a<\/strong> \u9ad8\u30ec\u30d9\u30eb\u306eERD\u3067\u306f\u3057\u3070\u3057\u3070\u7701\u7565\u3055\u308c\u307e\u3059\u304c\u3001\u30b9\u30ad\u30fc\u30de\u304c\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u69cb\u7bc9\u5834\u6240\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u8aad\u307f\u53d6\u308a\u64cd\u4f5c\u3092\u9ad8\u901f\u5316\u3057\u307e\u3059\u304c\u3001\u66f8\u304d\u8fbc\u307f\u3092\u9045\u304f\u3057\u307e\u3059\u3002\u30b9\u30ad\u30fc\u30de\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u7269\u7406\u7684\u6700\u9069\u5316\u3092\u898f\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n

      \u30b9\u30ad\u30fc\u30de\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u304a\u3088\u3073\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u306e\u8cac\u4efb\u3082\u8ca0\u3044\u307e\u3059\u3002\u7279\u5b9a\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u5bfe\u3059\u308b\u8aad\u307f\u53d6\u308a\u307e\u305f\u306f\u66f8\u304d\u8fbc\u307f\u3092\u8a31\u53ef\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3092\u51e6\u7406\u3057\u3001\u30c7\u30fc\u30bf\u306e\u5909\u66f4\u304c\u539f\u5b50\u7684\u3067\u3042\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u958b\u767a\u8005\u304c CREATE TABLE<\/code> \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u8a18\u8ff0\u3059\u308b\u3068\u304d\u3001\u5f7c\u3089\u306f\u30b9\u30ad\u30fc\u30de\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u308b\u306e\u3067\u3059\u3002\u3053\u308c\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30b3\u30fc\u30c9\u304c\u76f4\u63a5\u5bfe\u8a71\u3059\u308b\u5b9f\u88c5\u30ec\u30a4\u30e4\u30fc\u3067\u3059\u3002<\/p>\n

      \u4e3b\u306a\u9055\u3044\u3092\u4e00\u76ee\u3067\u898b\u6bd4\u3079\u308b \ud83d\udcca<\/h2>\n

      \u9055\u3044\u3092\u660e\u78ba\u306b\u3059\u308b\u305f\u3081\u306b\u3001\u9055\u3044\u3092\u4e26\u3079\u3066\u898b\u6bd4\u3079\u308b\u3068\u5f79\u7acb\u3061\u307e\u3059\u3002ERD\u306f\u62bd\u8c61\u7684\u3067\u8a2d\u8a08\u5fd7\u5411\u3067\u3042\u308a\u3001\u4e00\u65b9\u3067\u30b9\u30ad\u30fc\u30de\u306f\u5177\u4f53\u7684\u3067\u5b9f\u88c5\u5fd7\u5411\u3067\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n\n\n
      \u6a5f\u80fd<\/th>\nERD\uff08\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u95a2\u4fc2\u56f3\uff09<\/th>\n\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b9\u30ad\u30fc\u30de<\/th>\n<\/tr>\n<\/thead>\n
      \u6027\u8cea<\/strong><\/td>\n\u8ad6\u7406\u30e2\u30c7\u30eb\uff0f\u6982\u5ff5\u30e2\u30c7\u30eb<\/td>\n\u7269\u7406\u30e2\u30c7\u30eb<\/td>\n<\/tr>\n
      \u7126\u70b9<\/strong><\/td>\n\u95a2\u4fc2\u6027\u3068\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc<\/td>\n\u30b9\u30c8\u30ec\u30fc\u30b8\u3068\u5f37\u5236<\/td>\n<\/tr>\n
      \u8868\u8a18\u6cd5<\/strong><\/td>\n\u30dc\u30c3\u30af\u30b9\u3001\u7dda\u3001\u30af\u30ed\u30a6\u30ba\u30d5\u30c3\u30c8\u8a18\u53f7<\/td>\nSQL\u6587\u3001DDL\u30b9\u30af\u30ea\u30d7\u30c8<\/td>\n<\/tr>\n
      \u4f9d\u5b58\u95a2\u4fc2<\/strong><\/td>\n\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4f9d\u5b58\u3057\u306a\u3044<\/td>\n\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u56fa\u6709\uff08\u30d9\u30f3\u30c0\u30fc\uff09<\/td>\n<\/tr>\n
      \u5236\u7d04<\/strong><\/td>\n\u6697\u9ed9\u306e\uff08\u30d3\u30b8\u30cd\u30b9\u30eb\u30fc\u30eb\uff09<\/td>\n\u660e\u793a\u7684\uff08PK\u3001FK\u3001\u30c1\u30a7\u30c3\u30af\uff09<\/td>\n<\/tr>\n
      \u6bb5\u968e<\/strong><\/td>\n\u8a2d\u8a08\u6bb5\u968e<\/td>\n\u958b\u767a\uff0f\u5c55\u958b\u6bb5\u968e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      \u3053\u306e\u8868\u306f\u3001\u305d\u308c\u3089\u304c\u95a2\u9023\u3057\u3066\u3044\u308b\u3082\u306e\u306e\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u306e\u7570\u306a\u308b\u6bb5\u968e\u3067\u52d5\u4f5c\u3059\u308b\u3053\u3068\u3092\u5f37\u8abf\u3057\u3066\u3044\u307e\u3059\u3002\u4e21\u8005\u3092\u6df7\u540c\u3059\u308b\u3068\u3001\u691c\u8a3c\u304c\u5b8c\u5168\u306b\u884c\u308f\u308c\u308b\u524d\u306b\u3001\u958b\u767a\u8005\u304c\u7269\u7406\u7684\u5236\u7d04\u3092\u8ad6\u7406\u30e2\u30c7\u30eb\u306b\u5f37\u5236\u3057\u3088\u3046\u3068\u3059\u308b\u50be\u5411\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

      \u7ffb\u8a33\u30d7\u30ed\u30bb\u30b9\uff1a\u56f3\u304b\u3089\u30b3\u30fc\u30c9\u3078 \ud83d\udd04<\/h2>\n

      ERD\u304b\u3089\u30b9\u30ad\u30fc\u30de\u3078\u306e\u79fb\u884c\u306f\u3001\u5e38\u306b\u76f4\u63a5\u7684\u306a1:1\u306e\u5bfe\u5fdc\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u7ffb\u8a33\u5c64\u304c\u3001\u591a\u304f\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u6469\u64e6\u3092\u751f\u3058\u308b\u539f\u56e0\u3068\u306a\u308a\u307e\u3059\u3002\u8ad6\u7406\u30e2\u30c7\u30eb\u306f\u7406\u60f3\u7684\u306a\u72b6\u614b\u3092\u4eee\u5b9a\u3057\u307e\u3059\u304c\u3001\u7269\u7406\u30e2\u30c7\u30eb\u306f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3001\u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0\u3001\u7279\u5b9a\u306e\u30a8\u30f3\u30b8\u30f3\u6a5f\u80fd\u3068\u3044\u3063\u305f\u8ab2\u984c\u306b\u5bfe\u51e6\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n

      \u6b63\u898f\u5316 vs. \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/h3>\n

      ERD\u306f\u901a\u5e38\u3001\u7b2c\u4e09\u6b63\u898f\u5f62\uff083NF\uff09\u306b\u6b63\u898f\u5316\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u30c7\u30fc\u30bf\u306e\u91cd\u8907\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u9ad8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u7528\u306e\u30b9\u30ad\u30fc\u30de\u306b\u7ffb\u8a33\u3059\u308b\u969b\u3001\u958b\u767a\u8005\u306f\u3057\u3070\u3057\u3070\u975e\u6b63\u898f\u5316\u3092\u884c\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30af\u30a8\u30ea\u5b9f\u884c\u6642\u306b\u5fc5\u8981\u306a\u7d50\u5408\u306e\u6570\u3092\u6e1b\u3089\u3059\u305f\u3081\u306b\u3001\u610f\u56f3\u7684\u306b\u30c7\u30fc\u30bf\u3092\u91cd\u8907\u3055\u305b\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u9867\u5ba2\u540d<\/em>\u3092\u76f4\u63a5\u6ce8\u6587<\/em>\u30c6\u30fc\u30d6\u30eb\u306b\u4fdd\u5b58\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u308c\u306f\u53b3\u683c\u306a\u6b63\u898f\u5316\u30eb\u30fc\u30eb\u306b\u9055\u53cd\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u30ec\u30dd\u30fc\u30c8\u30af\u30a8\u30ea\u306e\u5b9f\u884c\u901f\u5ea6\u3092\u8457\u3057\u304f\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002ERD\u3067\u306f\u95a2\u4fc2\u6027\u304c\u793a\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u30b9\u30ad\u30fc\u30de\u3067\u306f\u901f\u5ea6\u3092\u8003\u616e\u3057\u3066\u30c7\u30fc\u30bf\u3092\u91cd\u8907\u3057\u3066\u4fdd\u5b58\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

      \u30c7\u30fc\u30bf\u578b\u306e\u8a73\u7d30<\/h3>\n

      ERD\u306f\u5358\u306b\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u300c\u300d\u3067\u3042\u308b\u3068\u8ff0\u3079\u3066\u3044\u308b\u3060\u3051\u3067\u3059\u65e5\u4ed8<\/em>\u3002\u30b9\u30ad\u30fc\u30de\u306f\u300c\u300d\u306e\u3069\u3061\u3089\u304b\u3092\u6c7a\u5b9a\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093DATE<\/code>, DATETIME<\/code>\u3001\u307e\u305f\u306fTIMESTAMP<\/code>\u3002\u6587\u5b57\u30bb\u30c3\u30c8\uff08UTF8\u3001ASCII\uff09\u3068\u7167\u5408\u898f\u5247\u3092\u6c7a\u5b9a\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u308c\u3089\u306e\u6c7a\u5b9a\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u56fd\u969b\u5316\u3084\u4e26\u3079\u66ff\u3048\u3092\u3069\u306e\u3088\u3046\u306b\u6271\u3046\u304b\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002\u4e00\u822c\u7684\u306aERD\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u5fae\u7d30\u306a\u70b9\u3092\u6349\u3048\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n

      \u591a\u5bfe\u591a\u95a2\u4fc2\u306e\u6271\u3044\u65b9<\/h3>\n

      ERD\u3067\u306f\u3001\u591a\u5bfe\u591a\u95a2\u4fc2\u306f\u4e8c\u91cd\u306e\u30ab\u30e9\u30b9\u306e\u8db3\u306e\u7dda\u3067\u63cf\u304b\u308c\u307e\u3059\u3002\u7269\u7406\u7684\u306a\u30b9\u30ad\u30fc\u30de\u3067\u306f\u3001\u3053\u308c\u81ea\u4f53\u306f\u76f4\u63a5\u5b58\u5728\u3067\u304d\u307e\u305b\u3093\u3002\u7d50\u5408\u30c6\u30fc\u30d6\u30eb\uff08\u307e\u305f\u306f\u30d6\u30ea\u30c3\u30b8\u30c6\u30fc\u30d6\u30eb\uff09\u3092\u4ecb\u3057\u3066\u3001\u4e8c\u3064\u306e1\u5bfe\u591a\u95a2\u4fc2\u306b\u5206\u89e3\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u7d50\u5408\u30c6\u30fc\u30d6\u30eb\u306e\u4e3b\u30ad\u30fc\u3092\u30b9\u30ad\u30fc\u30de\u3067\u5b9a\u7fa9\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u308c\u306f\u8907\u5408\u30ad\u30fc\u307e\u305f\u306f\u30b5\u30ed\u30b2\u30fc\u30c8\u30ad\u30fc\uff08UUID\uff09\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u69cb\u9020\u7684\u5909\u66f4\u306f\u9ad8\u30ec\u30d9\u30eb\u306e\u56f3\u3067\u306f\u898b\u3048\u307e\u305b\u3093\u304c\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u69cb\u9020\u306b\u304a\u3044\u3066\u306f\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n

      \u958b\u767a\u8005\u306b\u3068\u3063\u3066\u3053\u306e\u9055\u3044\u304c\u91cd\u8981\u306a\u7406\u7531 \ud83d\udee0\ufe0f<\/h2>\n

      \u3053\u306e\u4e8c\u3064\u306e\u6982\u5ff5\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u7406\u8ad6\u7684\u306a\u3053\u3068\u3060\u3051\u3067\u306f\u306a\u304f\u3001\u65e5\u3005\u306e\u4f5c\u696d\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002\u30c7\u30fc\u30bf\u6574\u5408\u6027\u306b\u30d0\u30b0\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u554f\u984c\u304c\u8ad6\u7406\u8a2d\u8a08\u306b\u3042\u308b\u306e\u304b\u3001\u7269\u7406\u7684\u5b9f\u88c5\u306b\u3042\u308b\u306e\u304b\u3092\u77e5\u308b\u3053\u3068\u306f\u3001\u89e3\u6c7a\u3078\u306e\u7b2c\u4e00\u6b69\u3067\u3059\u3002<\/p>\n

      \u30c7\u30fc\u30bf\u6574\u5408\u6027\u306e\u30c7\u30d0\u30c3\u30b0<\/h3>\n

      \u4e88\u671f\u305b\u306c\u30c7\u30fc\u30bf\u306e\u91cd\u8907\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u6b21\u306e\u3088\u3046\u306b\u5c0b\u306d\u308b\u3079\u304d\u3067\u3059\uff1aERD\u306b\u6b20\u9665\u304c\u3042\u308b\u306e\u304b\u3001\u305d\u308c\u3068\u3082\u30b9\u30ad\u30fc\u30de\u306e\u5236\u7d04\u304c\u6b20\u3051\u3066\u3044\u308b\u306e\u304b\uff1f\u30b9\u30ad\u30fc\u30de\u306b\u5916\u90e8\u30ad\u30fc\u304c\u6b20\u3051\u3066\u3044\u308b\u3068\u3001ERD\u306e\u8ad6\u7406\u304c\u4e0d\u53ef\u80fd\u3068\u60f3\u5b9a\u3057\u3066\u3044\u305f\u5b64\u7acb\u30ec\u30b3\u30fc\u30c9\u304c\u8a31\u53ef\u3055\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u9006\u306b\u3001ERD\u304c\u53b3\u3057\u3059\u304e\u3066\u30bd\u30d5\u30c8\u30c7\u30ea\u30fc\u30c8\u3092\u8003\u616e\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u30b9\u30ad\u30fc\u30de\u304c\u30cf\u30fc\u30c9\u30c7\u30ea\u30fc\u30c8\u3092\u5f37\u5236\u3057\u3001\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u3092\u7834\u58ca\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u554f\u984c\u3092\u5206\u96e2\u3059\u308b\u3053\u3068\u3067\u3001\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3092\u660e\u78ba\u306b\u7279\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n

      \u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3068\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3<\/h3>\n

      \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u7ba1\u7406\u3059\u308b\u969b\u3001\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u306f\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u3057\u304b\u3057\u3001ERD\u3068\u30b9\u30ad\u30fc\u30de\u306f\u7570\u306a\u308b\u65b9\u6cd5\u3067\u9032\u5316\u3057\u307e\u3059\u3002\u30d3\u30b8\u30cd\u30b9\u8981\u4ef6\u304c\u5909\u5316\u3059\u308b\u3068ERD\u304c\u5909\u66f4\u3055\u308c\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u6700\u9069\u5316\u304c\u5fc5\u8981\u306b\u306a\u3063\u305f\u308a\u3001\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u304c\u9069\u7528\u3055\u308c\u308b\u3068\u30b9\u30ad\u30fc\u30de\u304c\u5909\u66f4\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u3092\u540c\u671f\u3055\u305b\u308b\u306e\u306f\u96e3\u3057\u3044\u8ab2\u984c\u3067\u3059\u3002\u30b9\u30ad\u30fc\u30de\u304c\u5909\u66f4\u3055\u308c\u3066\u3082ERD\u304c\u66f4\u65b0\u3055\u308c\u306a\u3044\u5834\u5408\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306f\u9673\u8150\u5316\u3057\u307e\u3059\u3002ERD\u304c\u5909\u66f4\u3055\u308c\u3066\u3082\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u4f5c\u6210\u3055\u308c\u306a\u3044\u5834\u5408\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306f\u8a2d\u8a08\u3068\u6574\u5408\u6027\u3092\u5931\u3044\u307e\u3059\u3002<\/p>\n

      \u65b0\u30e1\u30f3\u30d0\u30fc\u306e\u30aa\u30f3\u30dc\u30fc\u30c7\u30a3\u30f3\u30b0<\/h3>\n

      \u65b0\u898f\u958b\u767a\u8005\u306f\u3057\u3070\u3057\u3070\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u69cb\u9020\u3092\u7406\u89e3\u3059\u308b\u306e\u306b\u82e6\u52b4\u3057\u307e\u3059\u3002ERD\u3092\u63d0\u793a\u3059\u308b\u3053\u3068\u3067\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u6982\u5ff5\u7684\u306b\u3069\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3059\u308b\u304b\u306e\u6587\u8108\u3092\u63d0\u4f9b\u3067\u304d\u307e\u3059\u3002\u30b9\u30ad\u30fc\u30de\u3092\u63d0\u793a\u3059\u308b\u3053\u3068\u3067\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u6280\u8853\u7684\u306b\u3069\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3059\u308b\u304b\u306e\u6587\u8108\u3092\u63d0\u4f9b\u3067\u304d\u307e\u3059\u3002\u52b9\u679c\u7684\u306a\u30aa\u30f3\u30dc\u30fc\u30c7\u30a3\u30f3\u30b0\u306b\u306f\u4e21\u65b9\u304c\u5fc5\u8981\u3067\u3059\u3002ERD\u306f\u300c\u300d\u306b\u7b54\u3048\u3001\u300c\u3053\u308c\u306f\u3069\u3046\u3044\u3046\u610f\u5473\u3067\u3059\u304b\uff1f\u300d<\/em>\u305d\u3057\u3066\u30b9\u30ad\u30fc\u30de\u306f\u300c\u3069\u3046\u3084\u3063\u3066\u30a2\u30af\u30bb\u30b9\u3059\u308c\u3070\u3044\u3044\u3067\u3059\u304b\uff1f\u300d\u306b\u7b54\u3048\u307e\u3059<\/em>.<\/p>\n

      \u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\u306b\u304a\u3051\u308b\u4e00\u822c\u7684\u306a\u843d\u3068\u3057\u7a74 \ud83d\udea7<\/h2>\n

      \u660e\u78ba\u306a\u5b9a\u7fa9\u304c\u3042\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u591a\u304f\u306e\u30c1\u30fc\u30e0\u306fERD\u3068\u30b9\u30ad\u30fc\u30de\u3092\u540c\u4e00\u8996\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u7f60\u306b\u306f\u307e\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n

        \n
      • ERD\u3092\u98db\u3070\u3059\uff1a<\/strong>SQL\u30b9\u30ad\u30fc\u30de\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u76f4\u3061\u306b\u66f8\u304f\u3068\u3001\u69cb\u9020\u7684\u8ca0\u50b5\u304c\u751f\u3058\u308b\u50be\u5411\u304c\u3042\u308a\u307e\u3059\u3002\u8996\u899a\u7684\u306a\u30e2\u30c7\u30eb\u304c\u306a\u3044\u3068\u3001\u95a2\u4fc2\u6027\u304c\u5fd8\u308c\u3089\u308c\u305f\u308a\u3001\u4e00\u8cab\u6027\u306e\u306a\u3044\u5b9f\u88c5\u304c\u884c\u308f\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n
      • \u5236\u7d04\u3092\u7121\u8996\u3059\u308b\uff1a<\/strong>\u30e6\u30cb\u30fc\u30af\u306a\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306a\u3069\u306e\u30eb\u30fc\u30eb\u3092\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30b3\u30fc\u30c9\u306b\u306e\u307f\u4f9d\u5b58\u3057\u3066\u5b9f\u88c5\u3059\u308b\uff08\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u5236\u7d04\uff08UNIQUE\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff09\u3092\u7528\u3044\u306a\u3044\uff09\u306e\u306f\u5371\u967a\u3067\u3059\u3002\u30b9\u30ad\u30fc\u30de\u306f\u30c7\u30fc\u30bf\u6574\u5408\u6027\u306e\u6700\u5f8c\u306e\u9632\u885b\u7dda\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/li>\n
      • \u904e\u5270\u8a2d\u8a08\uff1a<\/strong>\u8981\u4ef6\u304c\u660e\u78ba\u306b\u306a\u308b\u524d\u304b\u3089\u3001\u3059\u3079\u3066\u306e\u53ef\u80fd\u306a\u5c5e\u6027\u3092\u542b\u3080\u3042\u307e\u308a\u8a73\u7d30\u306aERD\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5f8c\u3067\u79fb\u884c\u304c\u56f0\u96e3\u306a\u30b9\u30ad\u30fc\u30de\u304c\u751f\u3058\u308b\u3002<\/li>\n
      • \u30c4\u30fc\u30eb\u306e\u65ad\u7d76\uff1a<\/strong>\u30b3\u30fc\u30c9\u751f\u6210\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u306a\u3044\u8a2d\u8a08\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u3001\u307e\u305f\u306f\u30ea\u30d0\u30fc\u30b9\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u306a\u3044\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4e00\u65b9\u3067\u5909\u66f4\u304c\u884c\u308f\u308c\u308b\u304c\u4ed6\u65b9\u3067\u306f\u884c\u308f\u308c\u306a\u3044\u624b\u52d5\u306e\u30ae\u30e3\u30c3\u30d7\u304c\u751f\u3058\u308b\u3002<\/li>\n
      • \u540c\u7b49\u6027\u3092\u4eee\u5b9a\u3059\u308b\uff1a<\/strong>\u5b8c\u74a7\u306aERD\u304c\u3042\u308c\u3070\u5b8c\u74a7\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u4fdd\u8a3c\u3055\u308c\u308b\u3068\u601d\u3044\u8fbc\u3080\u3053\u3068\u3002\u30b9\u30ad\u30fc\u30de\u306fERD\u304c\u4e88\u898b\u3067\u304d\u306a\u3044\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306e\u5236\u9650\u3001\u30af\u30a8\u30ea\u30d1\u30bf\u30fc\u30f3\u3001\u4e26\u884c\u51e6\u7406\u306e\u554f\u984c\u306b\u5f71\u97ff\u3092\u53d7\u3051\u308b\u3002<\/li>\n<\/ul>\n

        \u6642\u9593\u306e\u7d4c\u904e\u306b\u4f34\u3046\u540c\u671f\u306e\u7dad\u6301 \ud83d\udd04<\/h2>\n

        \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u6210\u9577\u3059\u308b\u306b\u3064\u308c\u3066\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3082\u9032\u5316\u3059\u308b\u3002\u6a5f\u80fd\u304c\u8ffd\u52a0\u3055\u308c\u3001\u53e4\u3044\u6a5f\u80fd\u306f\u975e\u63a8\u5968\u306b\u306a\u308b\u3002ERD\u3068\u30b9\u30ad\u30fc\u30de\u306e\u30ea\u30f3\u30af\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u304c\u3001\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306b\u96e3\u3057\u304f\u306a\u308b\u3002\u3053\u308c\u306f\u3057\u3070\u3057\u3070\u30b9\u30ad\u30fc\u30de\u306e\u305a\u308c<\/em>.<\/p>\n

        \u3053\u308c\u3092\u9632\u3050\u305f\u3081\u3001\u30c1\u30fc\u30e0\u306f\u53b3\u683c\u306a\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u3092\u63a1\u7528\u3059\u3079\u304d\u3067\u3042\u308b\uff1a<\/p>\n

          \n
        1. \u8a2d\u8a08\u3092\u6700\u512a\u5148\u3059\u308b\uff1a<\/strong>\u79fb\u884c\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u66f8\u304f\u524d\u306b\u3001\u5e38\u306bERD\u3092\u66f4\u65b0\u3059\u308b\u3002<\/li>\n
        2. \u751f\u6210\u3092\u81ea\u52d5\u5316\u3059\u308b\uff1a<\/strong>ERD\u304b\u3089SQL DDL\u3092\u751f\u6210\u3067\u304d\u308b\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b9\u30ad\u30fc\u30de\u304c\u8a2d\u8a08\u3068\u4e00\u81f4\u3059\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u3002<\/li>\n
        3. \u30ea\u30d0\u30fc\u30b9\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\uff1a<\/strong>\u5b9a\u671f\u7684\u306b\u30e9\u30a4\u30d6\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u4e0a\u3067\u30ea\u30d0\u30fc\u30b9\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u30c4\u30fc\u30eb\u3092\u5b9f\u884c\u3057\u3001ERD\u3092\u66f4\u65b0\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u8a2d\u8a08\u30d7\u30ed\u30bb\u30b9\u3092\u8fc2\u56de\u3057\u3066\u76f4\u63a5SQL\u30af\u30a8\u30ea\u3067\u884c\u308f\u308c\u305f\u5909\u66f4\u3092\u691c\u51fa\u3067\u304d\u308b\u3002<\/li>\n
        4. \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u5316\uff1a<\/strong> ERD\u304c\u30b9\u30ad\u30fc\u30de\u79fb\u884c\u30b9\u30af\u30ea\u30d7\u30c8\u3068\u540c\u3058\u30ea\u30dd\u30b8\u30c8\u30ea\u306b\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5358\u4e00\u306e\u771f\u5b9f\u306e\u6e90\u304c\u4f5c\u3089\u308c\u308b\u3002<\/li>\n<\/ol>\n

          \u3053\u306e\u898f\u5f8b\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u30d6\u30e9\u30c3\u30af\u30dc\u30c3\u30af\u30b9\u5316\u3059\u308b\u306e\u3092\u9632\u3050\u3002ERD\u3068\u30b9\u30ad\u30fc\u30de\u304c\u540c\u671f\u3057\u3066\u3044\u308b\u3068\u304d\u3001\u30b7\u30b9\u30c6\u30e0\u306f\u900f\u660e\u6027\u3092\u4fdd\u3061\u3001\u7ba1\u7406\u53ef\u80fd\u3067\u3042\u308b\u3002<\/p>\n

          \u30af\u30a8\u30ea\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u6700\u9069\u5316\u3078\u306e\u5f71\u97ff \u26a1<\/h2>\n

          \u30b9\u30ad\u30fc\u30de\u304c\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u4e0e\u3048\u308b\u5f71\u97ff\u306fERD\u3088\u308a\u3082\u5927\u304d\u3044\u3002ERD\u306f\u95a2\u4fc2\u3092\u793a\u3059\u304c\u3001\u30b9\u30ad\u30fc\u30de\u304c\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a8\u30f3\u30b8\u30f3\u304c\u30c7\u30fc\u30bf\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u65b9\u6cd5\u3092\u6c7a\u5b9a\u3059\u308b\u3002ERD\u306f\u300cUsers\u300d\u3068\u300cPosts\u300d\u306e\u8ad6\u7406\u7684\u306a\u7d50\u5408\u3092\u793a\u3059\u304b\u3082\u3057\u308c\u306a\u3044\u3002Users<\/em> \u3068 Posts<\/em>\u3002\u30b9\u30ad\u30fc\u30de\u304c\u3001\u300cPosts\u300d\u30c6\u30fc\u30d6\u30eb\u306e\u300cUser_ID\u300d\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u5b58\u5728\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u6c7a\u5b9a\u3059\u308b\u3002User_ID<\/em> \u306b\u304a\u3044\u3066 Posts<\/em> \u30c6\u30fc\u30d6\u30eb\u306b\u3002<\/p>\n

          \u30b9\u30ad\u30fc\u30de\u306b\u9069\u5207\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u306a\u3051\u308c\u3070\u3001\u5358\u7d14\u306a\u30af\u30a8\u30ea\u304c\u30d5\u30eb\u30c6\u30fc\u30d6\u30eb\u30b9\u30ad\u30e3\u30f3\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u7269\u7406\u7684\u306a\u5236\u7d04\u3067\u3059\u3002ERD\u306f\u5b9f\u884c\u8a08\u753b\u3092\u793a\u3059\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u958b\u767a\u8005\u306f\u30af\u30a8\u30ea\u304c\u9045\u3044\u7406\u7531\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u30b9\u30ad\u30fc\u30de\u3092\u78ba\u8a8d\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3001\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30cb\u30f3\u30b0\u6226\u7565\u3001\u30c7\u30fc\u30bf\u578b\u3092\u5206\u6790\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

          \u3055\u3089\u306b\u3001\u30b9\u30ad\u30fc\u30de\u306f\u30ed\u30c3\u30af\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u7ba1\u7406\u3057\u307e\u3059\u3002\u8907\u6570\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u540c\u3058\u30ec\u30b3\u30fc\u30c9\u3092\u66f4\u65b0\u3059\u308b\u5834\u5408\u3001\u30b9\u30ad\u30fc\u30de\u306e\u5206\u96e2\u30ec\u30d9\u30eb\u3068\u30ed\u30c3\u30af\u6226\u7565\u304c\u304a\u4e92\u3044\u306b\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002ERD\u306f\u4e26\u884c\u51e6\u7406\u306b\u3064\u3044\u3066\u4f55\u3082\u8a9e\u308a\u307e\u305b\u3093\u3002\u3053\u308c\u306f\u9ad8\u8ca0\u8377\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u9055\u3044\u3067\u3059\u3002<\/p>\n

          \u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u3088\u308b\u30ae\u30e3\u30c3\u30d7\u306e\u57cb\u3081\u65b9 \ud83c\udfc6<\/h2>\n

          \u4e21\u30e2\u30c7\u30eb\u304c\u76ee\u7684\u3092\u52b9\u679c\u7684\u306b\u679c\u305f\u3059\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u57fa\u6e96\u3092\u63a1\u7528\u3059\u308b\u3053\u3068\u3092\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<\/p>\n

            \n
          • \u6a19\u6e96\u7684\u306a\u547d\u540d\u898f\u5247\u3092\u4f7f\u7528\u3059\u308b\uff1a<\/strong> \u30b9\u30ad\u30fc\u30de\u5185\u306e\u30c6\u30fc\u30d6\u30eb\u540d\u304cERD\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u540d\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3002\u4e00\u8cab\u6027\u304c\u3042\u308b\u3053\u3068\u3067\u8a8d\u77e5\u8ca0\u8377\u304c\u8efd\u6e1b\u3055\u308c\u308b\u3002<\/li>\n
          • \u5236\u7d04\u3092\u660e\u793a\u7684\u306b\u6587\u66f8\u5316\u3059\u308b\uff1a<\/strong> ERD\u3067\u306f\u3001\u95a2\u4fc2\u306b\u57fa\u6570\u3092\u6ce8\u91c8\u3059\u308b\u3002\u30b9\u30ad\u30fc\u30de\u3067\u306f\u3001\u5217\u306b\u305d\u306e\u5236\u7d04\u3092\u6ce8\u91c8\u3059\u308b\u3002\u30eb\u30fc\u30eb\u3092\u4e21\u65b9\u306e\u5834\u6240\u3067\u53ef\u8996\u5316\u3059\u308b\u3002<\/li>\n
          • \u5b9a\u671f\u7684\u306b\u898b\u76f4\u3059\uff1a<\/strong> \u751f\u7523\u74b0\u5883\u306e\u30b9\u30ad\u30fc\u30de\u306b\u5bfe\u3057\u3066\u56db\u534a\u671f\u3054\u3068\u306bERD\u3092\u30ec\u30d3\u30e5\u30fc\u3059\u308b\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3092\u7d44\u3080\u3002\u305a\u308c\u3084\u7570\u5e38\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/li>\n
          • \u95a2\u5fc3\u3092\u5206\u96e2\u3059\u308b\uff1a<\/strong> ERD\u3092\u30d3\u30b8\u30cd\u30b9\u30a2\u30fc\u30c6\u30a3\u30d5\u30a1\u30af\u30c8\u3001\u30b9\u30ad\u30fc\u30de\u3092\u6280\u8853\u7684\u30a2\u30fc\u30c6\u30a3\u30d5\u30a1\u30af\u30c8\u3068\u3057\u3066\u6271\u3046\u3002\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u3092\u7269\u7406\u7684\u306a\u30b9\u30ad\u30fc\u30de\u5b9a\u7fa9\u306b\u6df7\u5165\u3057\u3066\u306f\u306a\u3089\u306a\u3044\u3002<\/li>\n
          • \u79fb\u884c\u3092\u8a08\u753b\u3059\u308b\uff1a<\/strong> ERD\u304c\u5909\u66f4\u3055\u308c\u305f\u5834\u5408\u3001\u30b9\u30ad\u30fc\u30de\u306f\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u7d4c\u7531\u3057\u3066\u5909\u66f4\u3055\u308c\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3055\u308c\u305f\u30b9\u30af\u30ea\u30d7\u30c8\u306a\u3057\u306b\u3001\u672c\u756a\u74b0\u5883\u3067\u30b9\u30ad\u30fc\u30de\u3092\u76f4\u63a5\u5909\u66f4\u3057\u3066\u306f\u306a\u3089\u306a\u3044\u3002<\/li>\n<\/ul>\n

            \u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\u306e\u30d2\u30e5\u30fc\u30de\u30f3\u8981\u7d20 \ud83d\udc65<\/h2>\n

            \u7d50\u5c40\u306e\u3068\u3053\u308d\u3001\u3053\u308c\u3089\u306e\u30e2\u30c7\u30eb\u306f\u6a5f\u68b0\u306e\u305f\u3081\u3067\u306f\u306a\u304f\u3001\u4eba\u306e\u305f\u3081\u3067\u3059\u3002ERD\u306f\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u305f\u3081\u3067\u3059\u3002\u88fd\u54c1\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u304cSQL\u3092\u77e5\u3089\u306a\u304f\u3066\u3082\u3001\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u30b9\u30ad\u30fc\u30de\u306f\u6a5f\u68b0\u306e\u305f\u3081\u3067\u3059\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u30c7\u30fc\u30bf\u3092\u52b9\u7387\u7684\u306b\u53d6\u5f97\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n

            \u958b\u767a\u8005\u304c\u3053\u306e\u4eba\u9593\u3068\u6a5f\u68b0\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u3068\u3001\u3088\u308a\u826f\u3044\u30b7\u30b9\u30c6\u30e0\u3092\u8a2d\u8a08\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u5411\u3051\u306bERD\u3092\u7c21\u7565\u5316\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a8\u30f3\u30b8\u30f3\u5411\u3051\u306b\u30b9\u30ad\u30fc\u30de\u3092\u8a73\u7d30\u5316\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u3092\u628a\u63e1\u3067\u304d\u308b\u306e\u3067\u3059\u3002\u3053\u306e\u4e8c\u91cd\u6027\u3053\u305d\u304c\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u672c\u8cea\u3067\u3059\u3002<\/p>\n

            \u8ad6\u7406\u56f3\u3068\u7269\u7406\u7684\u5b9f\u88c5\u306e\u5883\u754c\u3092\u5c0a\u91cd\u3059\u308b\u3053\u3068\u3067\u3001\u30c1\u30fc\u30e0\u306f\u30c7\u30fc\u30bf\u7834\u640d\u3084\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3068\u3044\u3063\u305f\u4e00\u822c\u7684\u306a\u843d\u3068\u3057\u7a74\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002ERD\u306f\u30d3\u30b8\u30e7\u30f3\u3092\u63d0\u4f9b\u3057\u3001\u30b9\u30ad\u30fc\u30de\u306f\u73fe\u5b9f\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u4e21\u65b9\u304c\u6210\u529f\u3057\u305f\u30b7\u30b9\u30c6\u30e0\u306b\u306f\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n

            \u30c7\u30fc\u30bf\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u3064\u3044\u3066\u306e\u6700\u7d42\u7684\u306a\u8003\u5bdf \ud83e\udde0<\/h2>\n

            \u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u95a2\u4fc2\u56f3\uff08ERD\uff09\u3068\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b9\u30ad\u30fc\u30de\u306e\u9055\u3044\u306f\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u5de5\u5b66\u306e\u57fa\u76e4\u3068\u306a\u308b\u67f1\u3067\u3059\u3002\u3053\u308c\u306f\u601d\u8003\u304b\u3089\u884c\u52d5\u3001\u30a2\u30a4\u30c7\u30a2\u304b\u3089\u5b9f\u884c\u3078\u306e\u79fb\u884c\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002ERD\u306f\u30d3\u30b8\u30cd\u30b9\u3092\u52d5\u304b\u3059\u95a2\u4fc2\u6027\u3068\u8ad6\u7406\u3092\u6349\u3048\u3001\u30b9\u30ad\u30fc\u30de\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u52d5\u304b\u3059\u5236\u7d04\u3068\u69cb\u9020\u3092\u6349\u3048\u307e\u3059\u3002<\/p>\n

            \u3053\u308c\u3089\u306e\u4e8c\u3064\u306e\u30e2\u30c7\u30eb\u306e\u95a2\u4fc2\u3092\u7fd2\u5f97\u3059\u308b\u3053\u3068\u306f\u3001\u5b9a\u7fa9\u3092\u6697\u8a18\u3059\u308b\u3053\u3068\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30c7\u30fc\u30bf\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u56f3\u306e\u5909\u66f4\u304c\u30b3\u30fc\u30c9\u306e\u5909\u66f4\u3092\u8981\u3059\u308b\u3053\u3068\u3001\u305d\u3057\u3066\u30b3\u30fc\u30c9\u306e\u5909\u66f4\u304c\u56f3\u306b\u53cd\u6620\u3055\u308c\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3053\u3068\u3092\u77e5\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u306e\u30b5\u30a4\u30af\u30eb\u306b\u3088\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u6574\u5408\u6027\u3092\u6301\u3061\u3001\u4fe1\u983c\u6027\u304c\u3042\u308a\u3001\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306a\u72b6\u614b\u3092\u4fdd\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

            \u958b\u767a\u306e\u9053\u3092\u9032\u3080\u4e2d\u3067\u3001\u3053\u308c\u3089\u306e\u4e8c\u3064\u306e\u30e2\u30c7\u30eb\u3092\u660e\u78ba\u306b\u533a\u5225\u3057\u3066\u304f\u3060\u3055\u3044\u3002ERD\u306f\u8a08\u753b\u3068\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u3001\u30b9\u30ad\u30fc\u30de\u306f\u69cb\u7bc9\u3068\u5f37\u5236\u306b\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4e21\u8005\u304c\u4e00\u81f4\u3057\u305f\u3068\u304d\u3001\u6642\u9593\u3068\u5909\u5316\u306b\u8010\u3048\u308b\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002<\/p>\n

            \u601d\u3044\u51fa\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u76ee\u7684\u306f\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3059\u308b\u3053\u3068\u3060\u3051\u3067\u306f\u306a\u304f\u3001\u610f\u5473\u306e\u3042\u308b\u5f62\u3067\u4fdd\u5b58\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u305d\u306e\u610f\u5473\u306fERD\u306e\u8ad6\u7406\u7684\u306a\u660e\u78ba\u3055\u3068\u3001\u30b9\u30ad\u30fc\u30de\u306e\u69cb\u9020\u7684\u306a\u53b3\u5bc6\u3055\u304b\u3089\u751f\u307e\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306f\u4e00\u7dd2\u306b\u3001\u3042\u306a\u305f\u306e\u30c7\u30fc\u30bf\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u57fa\u76e4\u3092\u5f62\u6210\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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