{"id":87,"date":"2026-04-03T13:57:46","date_gmt":"2026-04-03T13:57:46","guid":{"rendered":"https:\/\/www.we-notes.com\/ja\/designing-scalable-erd-diagrams-high-traffic-backend\/"},"modified":"2026-04-03T13:57:46","modified_gmt":"2026-04-03T13:57:46","slug":"designing-scalable-erd-diagrams-high-traffic-backend","status":"publish","type":"post","link":"https:\/\/www.we-notes.com\/ja\/designing-scalable-erd-diagrams-high-traffic-backend\/","title":{"rendered":"\u5305\u62ec\u7684\u306a\u30ac\u30a4\u30c9\uff1a\u9ad8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u30b7\u30b9\u30c6\u30e0\u5411\u3051\u306e\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306aER\u56f3\u306e\u8a2d\u8a08"},"content":{"rendered":"

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

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    \n
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    1. \u30b9\u30ad\u30fc\u30de\u306b\u53cd\u6620\u3055\u308c\u305f\u30ad\u30e3\u30c3\u30b7\u30e5\u6226\u7565<\/h3>\n

    \u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u3092\u8a2d\u8a08\u3059\u308b\u969b\u306b\u306f\u3001\u30c7\u30fc\u30bf\u304c\u3069\u306e\u3088\u3046\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u308b\u304b\u3092\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u983b\u7e41\u306b\u30a2\u30af\u30bb\u30b9\u3055\u308c\u308b\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306f\u3001\u5bb9\u6613\u306a\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3092\u53ef\u80fd\u306b\u3059\u308b\u69cb\u9020\u306b\u3059\u308b\u3079\u304d\u3067\u3059\u3002\u983b\u7e41\u306b\u7d50\u5408\u3055\u308c\u308b\u30c6\u30fc\u30d6\u30eb\u306b\u3001\u5927\u304d\u306a\u53ef\u5909\u9577\u306eblob\u3092\u683c\u7d0d\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u4ee3\u308f\u308a\u306b\u53c2\u7167\u30ad\u30fc\u3092\u4fdd\u5b58\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5225\u9014blob\u3092\u53d6\u5f97\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5\u30ec\u30a4\u30e4\u30fc\u306e\u30e1\u30e2\u30ea\u8ca0\u8377\u304c\u8efd\u6e1b\u3055\u308c\u307e\u3059\u3002<\/p>\n

    2. \u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30cb\u30f3\u30b0\u3068\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u30ad\u30fc<\/h3>\n

    \u30c7\u30fc\u30bf\u304c\u5897\u52a0\u3059\u308b\u3068\u3001\u5358\u4e00\u30c6\u30fc\u30d6\u30eb\u306e\u30b9\u30c8\u30ec\u30fc\u30b8\u306f\u975e\u52b9\u7387\u306b\u306a\u308a\u307e\u3059\u3002\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u306f\u30c7\u30fc\u30bf\u3092\u8907\u6570\u306e\u30ce\u30fc\u30c9\u306b\u5206\u5272\u3057\u307e\u3059\u3002ERD\u306f\u660e\u78ba\u306b\u30b7\u30e3\u30fc\u30c9\u30ad\u30fc\u3092\u5b9a\u7fa9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u30ad\u30fc\u304c\u884c\u306e\u5206\u5e03\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u30b7\u30e3\u30fc\u30c9\u30ad\u30fc\u304c\u9069\u5207\u3067\u306a\u3044\u5834\u5408\u30011\u3064\u306e\u30ce\u30fc\u30c9\u304c\u4ed6\u306e\u30ce\u30fc\u30c9\u3088\u308a\u3082\u8457\u3057\u304f\u591a\u304f\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u51e6\u7406\u3059\u308b\u300c\u30db\u30c3\u30c8\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u300d\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

      \n
    • \u6c34\u5e73\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\uff1a<\/strong> \u30ad\u30fc\u306b\u57fa\u3065\u3044\u3066\u884c\u3092\u5206\u5272\u3057\u307e\u3059\u3002ERD\u306f\u30ad\u30fc\u306e\u5206\u5e03\u65b9\u6cd5\u3092\u793a\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n
    • \u5782\u76f4\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\uff1a<\/strong> \u5217\u3092\u30c6\u30fc\u30d6\u30eb\u9593\u3067\u5206\u5272\u3057\u307e\u3059\u3002\u91cd\u3044\u5217\uff08\u4f8b\uff1a\u30ed\u30b0\uff09\u3092\u30b3\u30a2\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30c7\u30fc\u30bf\u304b\u3089\u5206\u96e2\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/li>\n<\/ul>\n

      \ud83d\udd17 \u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30cb\u30f3\u30b0\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306b\u304a\u3051\u308b\u95a2\u4fc2\u306e\u7ba1\u7406<\/h2>\n

      \u95a2\u4fc2\u6027\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u7d71\u5408\u3059\u308b\u57fa\u76e4\u3067\u3059\u304c\u3001\u5206\u6563\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u9045\u5ef6\u306e\u539f\u56e0\u3068\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u5916\u90e8\u30ad\u30fc\u306f\u53c2\u7167\u6574\u5408\u6027\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u304c\u3001\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u74b0\u5883\u3067\u306f\u3001\u30ce\u30fc\u30c9\u9593\u3067\u3053\u308c\u3089\u306e\u5236\u7d04\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u306f\u30b3\u30b9\u30c8\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n

      \u591a\u5bfe\u591a\u95a2\u4fc2\u306e\u51e6\u7406<\/h3>\n

      \u591a\u5bfe\u591a\u95a2\u4fc2\u306b\u306f\u7d50\u5408\u30c6\u30fc\u30d6\u30eb\u304c\u5fc5\u8981\u3067\u3059\u3002\u9ad8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u72b6\u6cc1\u3067\u306f\u3001\u3053\u306e\u30c6\u30fc\u30d6\u30eb\u304c\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u983b\u7e41\u306b\u30af\u30a8\u30ea\u3092\u884c\u3046\u5834\u5408\u3001\u95a2\u4fc2\u6027\u3092\u975e\u6b63\u898f\u5316\u3059\u308b\u3053\u3068\u3092\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u7d50\u5408\u30c6\u30fc\u30d6\u30eb\u3092\u7d50\u5408\u3059\u308b\u4ee3\u308f\u308a\u306b\u3001\u57fa\u6570\u304c\u8a31\u3059\u5834\u5408\u306f\u3001\u89aa\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306b\u95a2\u4fc2ID\u3092\u76f4\u63a5\u683c\u7d0d\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30af\u30a8\u30ea\u306e\u6df1\u3055\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002<\/p>\n

      \u81ea\u5df1\u53c2\u7167\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3<\/h3>\n

      \u4e00\u90e8\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306f\u81ea\u5206\u81ea\u8eab\u3092\u53c2\u7167\u3059\u308b\u3082\u306e\u304c\u3042\u308a\u3001\u30ab\u30c6\u30b4\u30ea\u3084\u968e\u5c64\u7684\u306a\u30b3\u30e1\u30f3\u30c8\u306a\u3069\u304c\u8a72\u5f53\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u95a2\u4fc2\u6027\u306f\u614e\u91cd\u306b\u8a2d\u8a08\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30af\u30a8\u30ea\u5185\u306e\u6df1\u3044\u518d\u5e30\u306f\u30b7\u30b9\u30c6\u30e0\u30ea\u30bd\u30fc\u30b9\u3092\u67af\u6e07\u3055\u305b\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u8ad6\u7406\u5185\u3067\u81ea\u5df1\u53c2\u7167\u30c1\u30a7\u30fc\u30f3\u306e\u6df1\u3055\u3092\u5236\u9650\u3059\u308b\u304b\u3001\u53ef\u80fd\u306a\u5834\u5408\u306f\u30de\u30c6\u30ea\u30a2\u30e9\u30a4\u30ba\u30c9\u30d1\u30b9\u3092\u4f7f\u7528\u3057\u3066\u69cb\u9020\u3092\u5e73\u5766\u5316\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n

      \ud83d\udd0d \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u305f\u3081\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u6226\u7565<\/h2>\n

      ERD\u306f\u8ad6\u7406\u69cb\u9020\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u304c\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u7269\u7406\u7684\u306a\u53d6\u5f97\u901f\u5ea6\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u56f3\u81ea\u4f53\u306f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u793a\u3057\u3066\u3044\u307e\u305b\u3093\u304c\u3001\u8a2d\u8a08\u4e0a\u306e\u610f\u601d\u6c7a\u5b9a\u304c\u3001\u3069\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u5b9f\u73fe\u53ef\u80fd\u304b\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002<\/p>\n

        \n
      • \u4e3b\u30ad\u30fc\uff1a<\/strong> \u591a\u304f\u306e\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u3053\u308c\u3089\u306f\u30af\u30e9\u30b9\u30bf\u5316\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u30c7\u30fc\u30bf\u304c\u3053\u306e\u30ad\u30fc\u306b\u3088\u3063\u3066\u7269\u7406\u7684\u306b\u4e26\u3079\u66ff\u3048\u3089\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u65ad\u7247\u5316\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3001\u5747\u7b49\u306a\u5206\u5e03\u3092\u4fdd\u8a3c\u3059\u308b\u4e3b\u30ad\u30fc\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n
      • \u88dc\u52a9\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff1a<\/strong> \u3059\u3079\u3066\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u66f8\u304d\u8fbc\u307f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6d88\u8cbb\u3057\u307e\u3059\u3002\u3042\u307e\u308a\u306b\u3082\u591a\u304f\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8ffd\u52a0\u3059\u308b\u3068\u3001\u633f\u5165\u3084\u66f4\u65b0\u64cd\u4f5c\u304c\u9045\u304f\u306a\u308a\u307e\u3059\u3002`WHERE`\u3001`JOIN`\u3001\u307e\u305f\u306f`ORDER BY`\u7bc0\u3067\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u30ab\u30e9\u30e0\u3060\u3051\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8a2d\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n
      • \u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff1a<\/strong> \u8907\u6570\u306e\u30ab\u30e9\u30e0\u3092\u4e00\u7dd2\u306b\u30af\u30a8\u30ea\u3059\u308b\u5834\u5408\u3001\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\u30ab\u30e9\u30e0\u306e\u9806\u5e8f\u306f\u91cd\u8981\u3067\u3042\u308a\u3001\u6700\u3082\u4e00\u822c\u7684\u306a\u30af\u30a8\u30ea\u30d1\u30bf\u30fc\u30f3\u3068\u4e00\u81f4\u3055\u305b\u308b\u3079\u304d\u3067\u3059\u3002<\/li>\n<\/ul>\n

        \u2696\ufe0f \u5206\u6563\u30b9\u30ad\u30fc\u30de\u306b\u304a\u3051\u308b\u4e00\u8cab\u6027\u3068\u53ef\u7528\u6027\u306e\u6bd4\u8f03<\/h2>\n

        \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7406\u8ad6\u3067\u306f\u3001CAP\u5b9a\u7406\u306b\u3064\u3044\u3066\u983b\u7e41\u306b\u8b70\u8ad6\u3055\u308c\u308b\u3002\u3053\u306e\u5b9a\u7406\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u4e00\u8cab\u6027\u3001\u53ef\u7528\u6027\u3001\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u8010\u6027\u306e3\u3064\u306e\u3046\u30612\u3064\u3057\u304b\u4fdd\u8a3c\u3067\u304d\u306a\u3044\u3053\u3068\u3092\u793a\u5506\u3057\u3066\u3044\u308b\u3002\u3042\u306a\u305f\u306eERD\u8a2d\u8a08\u306f\u3001\u3053\u308c\u3089\u306e\u3046\u3061\u3069\u308c\u3092\u512a\u5148\u3059\u308b\u304b\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3002<\/p>\n

        \u4e00\u8cab\u6027\u3092\u512a\u5148\u3059\u308b\u5834\u5408\u3001\u53b3\u683c\u306a\u5916\u90e8\u30ad\u30fc\u3068ACID\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3092\u7528\u3044\u305f\u8a2d\u8a08\u3092\u884c\u3046\u3002\u3053\u308c\u306b\u3088\u308a\u30c7\u30fc\u30bf\u6574\u5408\u6027\u304c\u4fdd\u8a3c\u3055\u308c\u308b\u304c\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u767a\u751f\u6642\u306b\u9045\u5ef6\u304c\u751f\u3058\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002\u53ef\u7528\u6027\u3092\u512a\u5148\u3059\u308b\u5834\u5408\u3001\u5236\u7d04\u3092\u7de9\u3081\u3001\u4e00\u6642\u7684\u306a\u4e0d\u6574\u5408\u3092\u8a31\u5bb9\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002\u3053\u306e\u5834\u5408\u3001ERD\u306f\u300c\u30d0\u30fc\u30b8\u30e7\u30f3\u300d\u3084\u300c\u30b9\u30c6\u30fc\u30bf\u30b9\u300d\u30ab\u30e9\u30e0\u3092\u8a2d\u3051\u3066\u30c7\u30fc\u30bf\u306e\u72b6\u614b\u3092\u8ffd\u8de1\u3067\u304d\u308b\u3088\u3046\u306a\u6700\u7d42\u7684\u6574\u5408\u6027\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3079\u304d\u3067\u3042\u308b\u3002<\/p>\n

        \ud83d\udd04 \u30b9\u30ad\u30fc\u30de\u306e\u9032\u5316\u3068\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406<\/h2>\n

        \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u8981\u4ef6\u306f\u5909\u5316\u3059\u308b\u3002\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b9\u30ad\u30fc\u30de\u306f\u30c0\u30a6\u30f3\u30bf\u30a4\u30e0\u3092\u5f15\u304d\u8d77\u3053\u3055\u305a\u306b\u9032\u5316\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u9ad8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u5358\u306b\u30c6\u30fc\u30d6\u30eb\u3092\u524a\u9664\u3057\u3066\u518d\u4f5c\u6210\u3059\u308b\u3068\u3044\u3046\u65b9\u6cd5\u306f\u53d6\u308c\u306a\u3044\u3002\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u6226\u7565\u306fERD\u8a2d\u8a08\u30d7\u30ed\u30bb\u30b9\u306b\u7d44\u307f\u8fbc\u307e\u308c\u308b\u3079\u304d\u3067\u3042\u308b\u3002<\/p>\n

          \n
        1. \u5f8c\u65b9\u4e92\u63db\u6027\uff1a<\/strong>\u30ab\u30e9\u30e0\u3092\u8ffd\u52a0\u3059\u308b\u969b\u306f\u3001\u521d\u671f\u6bb5\u968e\u3067null\u8a31\u5bb9\u306b\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u53e4\u3044\u30b3\u30fc\u30c9\u306f\u52d5\u4f5c\u3092\u7d9a\u3051\u308b\u4e00\u65b9\u3067\u3001\u65b0\u3057\u3044\u30b3\u30fc\u30c9\u304c\u30c7\u30fc\u30bf\u3092\u57cb\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/li>\n
        2. \u62e1\u5f35\u53ef\u80fd\u306a\u578b\uff1a<\/strong>\u53ef\u80fd\u306a\u9650\u308a\u56fa\u5b9a\u9577\u306e\u578b\u3092\u907f\u3051\u308b\u3002\u69cb\u9020\u304c\u6642\u9593\u3068\u3068\u3082\u306b\u5909\u5316\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u5c5e\u6027\u306b\u306f\u3001\u53ef\u5909\u9577\u6587\u5b57\u5217\u3084JSON\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3002<\/li>\n
        3. \u8ad6\u7406\u524a\u9664\uff1a<\/strong>\u7269\u7406\u7684\u306b\u884c\u3092\u524a\u9664\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u7121\u52b9\u72b6\u614b\u3068\u3057\u3066\u30de\u30fc\u30af\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5c65\u6b74\u30c7\u30fc\u30bf\u306e\u53c2\u7167\u6574\u5408\u6027\u304c\u4fdd\u305f\u308c\u3001\u30c6\u30fc\u30d6\u30eb\u306e\u5927\u898f\u6a21\u306a\u9818\u57df\u3092\u30ed\u30c3\u30af\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u9023\u9396\u7684\u524a\u9664\u64cd\u4f5c\u3092\u56de\u907f\u3067\u304d\u308b\u3002<\/li>\n<\/ol>\n

          \ud83d\uded1 \u4e00\u822c\u7684\u306a\u69cb\u9020\u7684\u843d\u3068\u3057\u7a74<\/h2>\n

          \u7d4c\u9a13\u8c4a\u5bcc\u306a\u30a2\u30fc\u30ad\u30c6\u30af\u30c8\u3067\u3059\u3089\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u6642\u306b\u843d\u3068\u3057\u7a74\u306b\u9665\u308b\u3053\u3068\u304c\u3042\u308b\u3002\u3053\u308c\u3089\u306e\u4e00\u822c\u7684\u306a\u554f\u984c\u306b\u6c17\u3065\u3044\u3066\u304a\u304f\u3053\u3068\u3067\u3001\u8a2d\u8a08\u30d5\u30a7\u30fc\u30ba\u3067\u306e\u6642\u9593\u3092\u5927\u5e45\u306b\u7bc0\u7d04\u3067\u304d\u308b\u3002<\/p>\n

          1. N+1\u30af\u30a8\u30ea\u554f\u984c<\/h3>\n

          \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u30ec\u30b3\u30fc\u30c9\u306e\u30ea\u30b9\u30c8\u3092\u53d6\u5f97\u3057\u3001\u305d\u306e\u5f8c\u5404\u30ec\u30b3\u30fc\u30c9\u306b\u5bfe\u3057\u3066\u95a2\u9023\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u5225\u3005\u306e\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3059\u308b\u5834\u5408\u306b\u767a\u751f\u3059\u308b\u3002ERD\u306b\u304a\u3044\u3066\u3001\u983b\u7e41\u306b\u4e00\u7dd2\u306b\u30a2\u30af\u30bb\u30b9\u3055\u308c\u308b\u95a2\u4fc2\u3092\u7279\u5b9a\u3059\u308b\u3002\u95a2\u9023\u30c7\u30fc\u30bf\u3092\u983b\u7e41\u306b\u53d6\u5f97\u3059\u308b\u3068\u4e88\u60f3\u3055\u308c\u308b\u5834\u5408\u306f\u3001\u6b63\u898f\u5316\u3092\u7de9\u3081\u305f\u308a\u3001\u7279\u5b9a\u306e\u8aad\u307f\u53d6\u308a\u30e2\u30c7\u30eb\u30d3\u30e5\u30fc\u3092\u4f5c\u6210\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u3092\u691c\u8a0e\u3059\u308b\u3002<\/p>\n

          2. \u30ab\u30eb\u30c6\u30b7\u30a2\u30f3\u7a4d<\/h3>\n

          \u8907\u6570\u306e\u5927\u304d\u306a\u30c6\u30fc\u30d6\u30eb\u3092\u9069\u5207\u306a\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u306a\u3057\u3067\u7d50\u5408\u3059\u308b\u3068\u3001\u7d50\u679c\u30bb\u30c3\u30c8\u306e\u30b5\u30a4\u30ba\u304c\u6307\u6570\u95a2\u6570\u7684\u306b\u5897\u5927\u3059\u308b\u3002ERD\u304c\u7d50\u5408\u7d50\u679c\u306e\u6f5c\u5728\u7684\u306a\u30b5\u30a4\u30ba\u3092\u5236\u9650\u3059\u308b\u5236\u7d04\u3092\u5f37\u5236\u3059\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3002\u5916\u90e8\u30ad\u30fc\u306b\u30d5\u30a3\u30eb\u30bf\u3092\u9069\u7528\u3057\u3066\u3001\u95a2\u4fc2\u306e\u7bc4\u56f2\u3092\u5236\u9650\u3059\u308b\u3002<\/p>\n

          3. \u5186\u74b0\u4f9d\u5b58<\/h3>\n

          \u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u540c\u58eb\u304c\u30eb\u30fc\u30d7\u72b6\u306b\u4f9d\u5b58\u3057\u3066\u306f\u306a\u3089\u306a\u3044\u3002\u305f\u3068\u3048\u3070\u3001Entity A\u304cEntity B\u3092\u521d\u671f\u5316\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u3067\u3042\u308a\u3001Entity B\u3082Entity A\u3092\u521d\u671f\u5316\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u3067\u3042\u308b\u5834\u5408\u3001\u8d77\u52d5\u6642\u3084\u30c7\u30fc\u30bf\u8aad\u307f\u8fbc\u307f\u6642\u306b\u30c7\u30c3\u30c9\u30ed\u30c3\u30af\u72b6\u614b\u304c\u767a\u751f\u3059\u308b\u3002\u3053\u306e\u3088\u3046\u306a\u5faa\u74b0\u3092\u3001\u4e2d\u9593\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u5c0e\u5165\u3059\u308b\u304b\u3001\u30c7\u30fc\u30bf\u306e\u521d\u671f\u5316\u9806\u5e8f\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u3067\u89e3\u6d88\u3059\u308b\u3002<\/p>\n

          \ud83d\udcdd \u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3068\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/h2>\n

          \u8a2d\u8a08\u306f\u4e00\u5ea6\u9650\u308a\u306e\u51fa\u6765\u4e8b\u3067\u306f\u306a\u3044\u3002\u30b7\u30b9\u30c6\u30e0\u304c\u7a3c\u50cd\u3057\u59cb\u3081\u305f\u3089\u3001\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u5065\u5168\u6027\u3092\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30e1\u30c8\u30ea\u30af\u30b9\u304c\u3001\u5c06\u6765\u306eERD\u306e\u8abf\u6574\u3092\u5c0e\u304f\u3079\u304d\u3067\u3042\u308b\u3002<\/p>\n

            \n
          • \u30af\u30a8\u30ea\u5206\u6790\uff1a<\/strong>\u5b9a\u671f\u7684\u306b\u9045\u3044\u30af\u30a8\u30ea\u30ed\u30b0\u3092\u78ba\u8a8d\u3059\u308b\u3002\u7279\u5b9a\u306e\u7d50\u5408\u304c\u5e38\u306b\u9045\u3044\u5834\u5408\u3001ERD\u3092\u898b\u76f4\u3057\u3001\u95a2\u4fc2\u6027\u3092\u6700\u9069\u5316\u3067\u304d\u308b\u304b\u691c\u8a0e\u3059\u308b\u3002<\/li>\n
          • \u30d5\u30e9\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u78ba\u8a8d\uff1a<\/strong>\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306b\u3001\u524a\u9664\u3084\u66f4\u65b0\u306b\u3088\u3063\u3066\u30b9\u30c8\u30ec\u30fc\u30b8\u304c\u30d5\u30e9\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u3059\u308b\u3002\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u518d\u69cb\u7bc9\u3084\u30c6\u30fc\u30d6\u30eb\u306e\u6700\u9069\u5316\u3092\u884c\u3046\u305f\u3081\u306e\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u671f\u9593\u3092\u8a08\u753b\u3059\u308b\u3002<\/li>\n
          • \u5bb9\u91cf\u8a08\u753b\uff1a<\/strong>\u30c7\u30fc\u30bf\u304c\u5897\u52a0\u3059\u308b\u306b\u3064\u308c\u3066\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u8981\u4ef6\u304c\u5909\u5316\u3059\u308b\u3002\u6700\u5927\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u6210\u9577\u7387\u3092\u63a8\u5b9a\u3057\u3001\u5bb9\u91cf\u5236\u9650\u306b\u9054\u3059\u308b\u524d\u306b\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u3084\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30cb\u30f3\u30b0\u3092\u8a08\u753b\u3059\u308b\u3002<\/li>\n<\/ul>\n

            \ud83d\udee0\ufe0f \u5b9f\u8df5\u7684\u5fdc\u7528\uff1a\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306a\u30ef\u30fc\u30af\u30d5\u30ed\u30fc<\/h2>\n

            \u3053\u308c\u3089\u306e\u539f\u5247\u3092\u5b9f\u88c5\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u56f3\u3092\u4f5c\u6210\u3059\u308b\u969b\u306b\u69cb\u9020\u5316\u3055\u308c\u305f\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306b\u5f93\u3046\u3079\u304d\u3067\u3042\u308b\u3002<\/p>\n

              \n
            1. \u8981\u4ef6\u53ce\u96c6\uff1a<\/strong> \u8aad\u307f\u53d6\u308a\/\u66f8\u304d\u8fbc\u307f\u306e\u6bd4\u7387\u3068\u60f3\u5b9a\u3055\u308c\u308b\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u30d1\u30bf\u30fc\u30f3\u3092\u5b9a\u7fa9\u3059\u308b\u3002<\/li>\n
            2. \u8ad6\u7406\u30e2\u30c7\u30eb\u5316\uff1a<\/strong>\u7269\u7406\u7684\u306a\u5236\u7d04\u3092\u6c17\u306b\u305b\u305a\u306b\u3001\u30d3\u30b8\u30cd\u30b9\u4e0a\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3068\u95a2\u4fc2\u6027\u306b\u7126\u70b9\u3092\u5f53\u3066\u3066ERD\u3092\u4f5c\u6210\u3059\u308b\u3002<\/li>\n
            3. \u7269\u7406\u30e2\u30c7\u30eb\u5316\uff1a<\/strong>\u8ad6\u7406\u30e2\u30c7\u30eb\u3092\u7269\u7406\u30b9\u30ad\u30fc\u30de\u306b\u5909\u63db\u3059\u308b\u3002\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8ffd\u52a0\u3057\u3001\u30c7\u30fc\u30bf\u578b\u3092\u5b9a\u7fa9\u3057\u3001\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30cb\u30f3\u30b0\u6226\u7565\u3092\u691c\u8a0e\u3059\u308b\u3002<\/li>\n
            4. \u30ec\u30d3\u30e5\u30fc\u3068\u691c\u8a3c\uff1a<\/strong>\u30e2\u30c7\u30eb\u306b\u5bfe\u3057\u3066\u9ad8\u8ca0\u8377\u306e\u30af\u30a8\u30ea\u3092\u30b7\u30df\u30e5\u30ec\u30fc\u30c8\u3059\u308b\u3002\u7d50\u5408\u3084\u30ed\u30c3\u30af\u306b\u304a\u3051\u308b\u6f5c\u5728\u7684\u306a\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u7279\u5b9a\u3059\u308b\u3002<\/li>\n
            5. \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u4f5c\u6210\uff1a<\/strong>\u8a2d\u8a08\u9078\u629e\u306e\u6839\u62e0\u3092\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u5316\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5c06\u6765\u306e\u958b\u767a\u8005\u304c\u7279\u5b9a\u306e\u6b63\u898f\u5316\u30ec\u30d9\u30eb\u304c\u9078\u3070\u308c\u305f\u7406\u7531\u3092\u7406\u89e3\u3057\u3084\u3059\u304f\u306a\u308b\u3002<\/li>\n<\/ol>\n

              \ud83d\udd2e \u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u5c06\u6765\u5bfe\u5fdc\u6027\u3092\u78ba\u4fdd\u3059\u308b<\/h2>\n

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