{"id":1568,"date":"2026-03-25T18:45:12","date_gmt":"2026-03-25T18:45:12","guid":{"rendered":"https:\/\/www.viz-read.com\/ja\/erd-troubleshooting-guide-fixing-broken-relationships\/"},"modified":"2026-03-25T18:45:12","modified_gmt":"2026-03-25T18:45:12","slug":"erd-troubleshooting-guide-fixing-broken-relationships","status":"publish","type":"post","link":"https:\/\/www.viz-read.com\/ja\/erd-troubleshooting-guide-fixing-broken-relationships\/","title":{"rendered":"ERD\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u30ac\u30a4\u30c9\uff1a\u6df7\u4e71\u3092\u5f15\u304d\u8d77\u3053\u3059\u524d\u306b\u7834\u640d\u3057\u305f\u95a2\u4fc2\u3092\u4fee\u6b63\u3059\u308b"},"content":{"rendered":"

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\n
\"Kawaii-style<\/figure>\n<\/div>\n

\u95a2\u4fc2\u306e\u57fa\u6570\u306e\u7406\u89e3 \ud83d\udd17<\/h2>\n

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    \n
  • 1\u5bfe1\uff081:1\uff09\uff1a<\/strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3A\u306e\u5404\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3B\u306e\u6b63\u78ba\u306b1\u3064\u306e\u30ec\u30b3\u30fc\u30c9\u306b\u95a2\u9023\u3057\u307e\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u306e\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u304c\u8a8d\u8a3c\u30c8\u30fc\u30af\u30f3\u3068\u30ea\u30f3\u30af\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u306a\u72b6\u6cc1\u3067\u3088\u304f\u898b\u3089\u308c\u307e\u3059\u3002<\/li>\n
  • 1\u5bfe\u591a\uff081:N\uff09\uff1a<\/strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3A\u306e1\u3064\u306e\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3B\u306e\u8907\u6570\u306e\u30ec\u30b3\u30fc\u30c9\u306b\u95a2\u9023\u3067\u304d\u307e\u3059\u304c\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3B\u306e\u30ec\u30b3\u30fc\u30c9\u306f\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3A\u306e1\u3064\u306e\u30ec\u30b3\u30fc\u30c9\u306b\u306e\u307f\u95a2\u9023\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u8457\u8005\u304c\u8907\u6570\u306e\u672c\u3092\u57f7\u7b46\u3059\u308b\u3088\u3046\u306a\u72b6\u6cc1\u3067\u6700\u3082\u4e00\u822c\u7684\u306a\u95a2\u4fc2\u3067\u3059\u3002<\/li>\n
  • \u591a\u5bfe\u591a\uff08M:N\uff09\uff1a<\/strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3A\u306e\u30ec\u30b3\u30fc\u30c9\u306f\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3B\u306e\u8907\u6570\u306e\u30ec\u30b3\u30fc\u30c9\u306b\u95a2\u9023\u3067\u304d\u3001\u305d\u306e\u9006\u3082\u307e\u305f\u540c\u69d8\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u95a2\u4fc2\u69cb\u9020\u5185\u3067\u6b63\u3057\u304f\u6a5f\u80fd\u3059\u308b\u305f\u3081\u306b\u4e2d\u9593\u306e\u7d50\u5408\u30c6\u30fc\u30d6\u30eb\u304c\u5fc5\u8981\u3067\u3059\u3002<\/li>\n<\/ul>\n

    \u3053\u308c\u3089\u306e\u57fa\u6570\u304c\u56f3\u3067\u8aa4\u3063\u3066\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u3068\u3001\u7269\u7406\u7684\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b9\u30ad\u30fc\u30de\u306b\u3082\u305d\u306e\u30a8\u30e9\u30fc\u304c\u53cd\u6620\u3055\u308c\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u4e00\u610f\u5236\u7d04\u304c\u306a\u3044\u72b6\u614b\u30671:1\u306e\u95a2\u4fc2\u30921:N\u3068\u3057\u3066\u5b9a\u7fa9\u3059\u308b\u3068\u3001\u91cd\u8907\u30a8\u30f3\u30c8\u30ea\u304c\u8a31\u53ef\u3055\u308c\u307e\u3059\u3002\u9006\u306b\u30011:N\u306e\u95a2\u4fc2\u30921:1\u3068\u3057\u3066\u5f37\u5236\u3059\u308b\u3068\u3001\u6b63\u5f53\u306a\u30c7\u30fc\u30bf\u306e\u62e1\u5f35\u304c\u963b\u6b62\u3055\u308c\u307e\u3059\u3002\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306f\u3001\u8996\u899a\u7684\u306a\u56f3\u304c\u610f\u56f3\u3055\u308c\u305f\u8ad6\u7406\u7684\u5236\u7d04\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002<\/p>\n

    ERD\u306b\u304a\u3051\u308b\u4e00\u822c\u7684\u306a\u69cb\u9020\u7684\u30a8\u30e9\u30fc \ud83d\udea8<\/h2>\n

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    1. \u5916\u90e8\u30ad\u30fc\u5236\u7d04\u306e\u6b20\u5982<\/h3>\n

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    2. \u5faa\u74b0\u4f9d\u5b58<\/h3>\n

    \u30a8\u30f3\u30c6\u30a3\u30c6\u30a3A\u304c\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3B\u306b\u4f9d\u5b58\u3057\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3B\u304c\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3A\u306b\u4f9d\u5b58\u3059\u308b\u72b6\u614b\u304c\u5faa\u74b0\u53c2\u7167\u3067\u3059\u3002\u305f\u307e\u306b\u5fc5\u8981\u306b\u306a\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u521d\u671f\u5316\u6642\u306b\u30c7\u30c3\u30c9\u30ed\u30c3\u30af\u3092\u5f15\u304d\u8d77\u3053\u3057\u307e\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u306fB\u306a\u3057\u3067\u306fA\u3092\u4f5c\u6210\u3067\u304d\u305a\u3001B\u3082A\u306a\u3057\u3067\u306f\u4f5c\u6210\u3067\u304d\u307e\u305b\u3093\u3002\u3053\u306e\u5faa\u74b0\u3092\u89e3\u6d88\u3059\u308b\u306b\u306f\u3001nullable\u30ab\u30e9\u30e0\u3092\u4f7f\u7528\u3059\u308b\u304b\u3001\u4f9d\u5b58\u95a2\u4fc2\u306e\u9806\u5e8f\u3092\u51e6\u7406\u3059\u308b\u521d\u671f\u5316\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n

    3. \u30c7\u30fc\u30bf\u578b\u306e\u4e0d\u4e00\u81f4<\/h3>\n

    \u95a2\u4fc2\u306f\u4e00\u81f4\u3059\u308b\u30c7\u30fc\u30bf\u578b\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u3042\u308b\u30c6\u30fc\u30d6\u30eb\u306e\u4e3b\u30ad\u30fc\u304c\u6574\u6570\u3067\u3042\u308b\u5834\u5408\u3001\u95a2\u9023\u3059\u308b\u30c6\u30fc\u30d6\u30eb\u306e\u5916\u90e8\u30ad\u30fc\u3082\u6574\u6570\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u7b26\u53f7\u4ed8\u304d\u3068\u7b26\u53f7\u306a\u3057\u6574\u6570\u306e\u9593\u3001\u307e\u305f\u306f\u6587\u5b57\u5217\u3068\u6570\u5024\u306e\u9593\u3067\u4e0d\u4e00\u81f4\u304c\u3042\u308b\u3068\u3001\u7d50\u5408\u64cd\u4f5c\u304c\u5931\u6557\u3057\u305f\u308a\u3001\u4e88\u671f\u3057\u306a\u3044\u52d5\u4f5c\u3092\u3057\u305f\u308a\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30ec\u30ac\u30b7\u30fc\u30c7\u30fc\u30bf\u306e\u30a4\u30f3\u30dd\u30fc\u30c8\u6642\u3084\u30b9\u30ad\u30fc\u30de\u79fb\u884c\u6642\u306b\u983b\u7e41\u306b\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n

    4. NULL\u8a31\u5bb9\u306e\u8aa4\u308a<\/h3>\n

    \u5916\u90e8\u30ad\u30fc\u5217\u306f\u3001\u95a2\u4fc2\u304c\u5fc5\u9808\u304b\u30aa\u30d7\u30b7\u30e7\u30f3\u304b\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u56f3\u3067\u95a2\u4fc2\u304c\u5fc5\u9808\u3068\u30de\u30fc\u30af\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u305d\u306e\u5217\u306fNULL\u5024\u3092\u53d7\u3051\u5165\u308c\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002\u5fc5\u9808\u306e\u95a2\u4fc2\u3067NULL\u3092\u8a31\u53ef\u3059\u308b\u3068\u3001\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u304c\u4e0d\u5b8c\u5168\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u9006\u306b\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u95a2\u4fc2\u3067NULL\u3092\u7981\u6b62\u3059\u308b\u3068\u3001\u30c7\u30fc\u30bf\u5165\u529b\u30a8\u30e9\u30fc\u304c\u5f37\u5236\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n
    \u30a8\u30e9\u30fc\u306e\u7a2e\u985e<\/th>\n\u5f71\u97ff<\/th>\n\u5178\u578b\u7684\u306a\u75c7\u72b6<\/th>\n<\/tr>\n<\/thead>\n
    \u5916\u90e8\u30ad\u30fc\u306e\u6b20\u5982<\/td>\n\u30c7\u30fc\u30bf\u6574\u5408\u6027\u306e\u55aa\u5931<\/td>\n\u89aa\u306e\u524a\u9664\u5f8c\u3082\u5b64\u5150\u30ec\u30b3\u30fc\u30c9\u304c\u6b8b\u5b58\u3059\u308b<\/td>\n<\/tr>\n
    \u57fa\u6570\u306e\u8aa4\u308a<\/td>\n\u8ad6\u7406\u7684\u4e0d\u6574\u5408<\/td>\n\u30af\u30a8\u30ea\u306f\u91cd\u8907\u3059\u308b\u304b\u3001\u95a2\u9023\u30c7\u30fc\u30bf\u304c\u6b20\u843d\u3057\u3066\u3044\u308b\u30c7\u30fc\u30bf\u3092\u8fd4\u3059<\/td>\n<\/tr>\n
    \u30c7\u30fc\u30bf\u578b\u306e\u4e0d\u4e00\u81f4<\/td>\n\u7d50\u5408\u306e\u5931\u6557<\/td>\n\u95a2\u4fc2\u306b\u304a\u3051\u308bSQL\u30a8\u30e9\u30fc\u307e\u305f\u306f\u7a7a\u306e\u7d50\u679c\u30bb\u30c3\u30c8<\/td>\n<\/tr>\n
    \u5faa\u74b0\u53c2\u7167<\/td>\n\u521d\u671f\u5316\u306e\u5931\u6557<\/td>\n\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u4f5c\u6210\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u505c\u6b62\u307e\u305f\u306f\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3059\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u30b9\u30ad\u30fc\u30de\u5206\u6790\u306e\u305f\u3081\u306e\u8a3a\u65ad\u624b\u9806 \ud83d\udd0d<\/h2>\n

    ERD\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f\u4f53\u7cfb\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u5fc5\u8981\u3067\u3059\u3002\u89e3\u6c7a\u7b56\u3092\u63a8\u6e2c\u3059\u308b\u3068\u3001\u65b0\u305f\u306a\u30d0\u30b0\u3092\u5f15\u304d\u8d77\u3053\u3059\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u95a2\u4fc2\u6027\u306e\u554f\u984c\u3092\u7279\u5b9a\u3057\u4fee\u6b63\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u3053\u306e\u624b\u9806\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n

    \u30b9\u30c6\u30c3\u30d71\uff1a\u8996\u899a\u7684\u691c\u67fb<\/h3>\n

    \u307e\u305a\u3001\u56f3\u9762\u3092\u30d3\u30b8\u30cd\u30b9\u8981\u4ef6\u3068\u7167\u3089\u3057\u5408\u308f\u305b\u3066\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u63cf\u304b\u308c\u305f\u3059\u3079\u3066\u306e\u7dda\u304c\u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u8981\u4ef6\u3092\u8868\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u7269\u7406\u30b9\u30ad\u30fc\u30de\u306b\u5b58\u5728\u3057\u306a\u3044\u88c5\u98fe\u7684\u307e\u305f\u306f\u63a8\u5b9a\u3055\u308c\u305f\u7dda\u306f\u524a\u9664\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u591a\u5bfe\u591a\u95a2\u4fc2\u306b\u306f\u7d50\u5408\u30c6\u30fc\u30d6\u30eb\u304c\u5b58\u5728\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3092\u7701\u7565\u3057\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002<\/p>\n

    \u30b9\u30c6\u30c3\u30d72\uff1a\u30af\u30a8\u30ea\u5206\u6790<\/h3>\n

    \u5b9f\u969b\u306eSQL\u30b9\u30ad\u30fc\u30de\u5b9a\u7fa9\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002CREATE\u6587\u3092\u8996\u899a\u30e2\u30c7\u30eb\u3068\u6bd4\u8f03\u3057\u3001\u4ee5\u4e0b\u306e\u70b9\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<\/p>\n

      \n
    • \u3059\u3079\u3066\u306e\u5916\u90e8\u30ad\u30fc\u304c\u30c7\u30fc\u30bf\u8f9e\u66f8\u306b\u5b58\u5728\u3057\u3066\u3044\u307e\u3059\u304b\uff1f<\/li>\n
    • \u89aa\u30c6\u30fc\u30d6\u30eb\u3068\u5b50\u30c6\u30fc\u30d6\u30eb\u306e\u30ab\u30e9\u30e0\u540d\u306f\u4e00\u8cab\u3057\u3066\u3044\u307e\u3059\u304b\uff1f<\/li>\n
    • \u5916\u90e8\u30ad\u30fc\u5217\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u5b58\u5728\u3057\u3066\u3044\u307e\u3059\u304b\uff1f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u306a\u3044\u3068\u3001\u95a2\u4fc2\u6027\u306e\u30af\u30a8\u30ea\u304c\u8457\u3057\u304f\u9045\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n

      \u30b9\u30c6\u30c3\u30d73\uff1a\u5236\u7d04\u306e\u691c\u8a3c<\/h3>\n

      \u53c2\u7167\u6574\u5408\u6027\u3092\u30c6\u30b9\u30c8\u3059\u308b\u305f\u3081\u306e\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u89aa\u30ec\u30b3\u30fc\u30c9\u3092\u524a\u9664\u3057\u3088\u3046\u3068\u3057\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u305d\u308c\u3092\u963b\u6b62\u3059\u308b\uff08\u30ab\u30b9\u30b1\u30fc\u30c9\uff09\u304b\u3001\u8a31\u53ef\u3059\u308b\uff08\u7121\u8996\uff09\u304b\u3092\u89b3\u5bdf\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5236\u7d04\u304c\u6709\u52b9\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u6a19\u6e96\u7684\u306a\u5236\u7d04\u52d5\u4f5c\u3092\u4e0a\u66f8\u304d\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u30c8\u30ea\u30ac\u30fc\u304c\u306a\u3044\u304b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n

      \u30b9\u30c6\u30c3\u30d74\uff1a\u30c7\u30fc\u30bf\u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0<\/h3>\n

      \u30c6\u30fc\u30d6\u30eb\u306b\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u3092\u5206\u6790\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u89aa\u30c6\u30fc\u30d6\u30eb\u306b\u5b58\u5728\u3057\u306a\u3044\u5916\u90e8\u30ad\u30fc\u5024\u3092\u6301\u3064\u5b50\u30c6\u30fc\u30d6\u30eb\u306e\u30ec\u30b3\u30fc\u30c9\u6570\u3092\u30ab\u30a6\u30f3\u30c8\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u6b20\u843d\u3057\u3066\u3044\u308b\u5236\u7d04\u306b\u3088\u3063\u3066\u5f15\u304d\u8d77\u3053\u3055\u308c\u305f\u640d\u5bb3\u3092\u6570\u5024\u5316\u3067\u304d\u307e\u3059\u3002\u30bc\u30ed\u3088\u308a\u5927\u304d\u3044\u30ab\u30a6\u30f3\u30c8\u306f\u3001\u6574\u5099\u304c\u5fc5\u8981\u306a\u6574\u5408\u6027\u306e\u4fb5\u5bb3\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

      \u5b64\u7acb\u30ec\u30b3\u30fc\u30c9\u304a\u3088\u3073\u5236\u7d04\u306e\u5bfe\u51e6 \ud83d\udee1\ufe0f<\/h2>\n

      \u5b64\u7acb\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u7834\u640d\u3057\u305f\u95a2\u4fc2\u6027\u306e\u6700\u3082\u9855\u8457\u306a\u5146\u5019\u3067\u3059\u3002\u89aa\u30ec\u30b3\u30fc\u30c9\u304c\u524a\u9664\u3055\u308c\u305f\u304c\u3001\u5b50\u30ec\u30b3\u30fc\u30c9\u304c\u6b8b\u3063\u3066\u3044\u308b\u5834\u5408\u306b\u767a\u751f\u3057\u307e\u3059\u3002\u3053\u306e\u5bfe\u51e6\u65b9\u6cd5\u306f\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u95a2\u4fc2\u30e2\u30c7\u30eb\u306b\u304a\u3051\u308b\u524a\u9664\u306e\u7ba1\u7406\u306b\u306f\u30013\u3064\u306e\u6a19\u6e96\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

        \n
      • \u30ab\u30b9\u30b1\u30fc\u30c9\u524a\u9664\uff1a<\/strong> \u89aa\u304c\u524a\u9664\u3055\u308c\u308b\u3068\u3001\u95a2\u9023\u3059\u308b\u3059\u3079\u3066\u306e\u5b50\u30ec\u30b3\u30fc\u30c9\u304c\u81ea\u52d5\u7684\u306b\u524a\u9664\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5b64\u7acb\u30c7\u30fc\u30bf\u304c\u6b8b\u3089\u306a\u3044\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u304c\u3001\u76e3\u67fb\u30c8\u30ec\u30fc\u30eb\u306b\u307e\u3060\u5fc5\u8981\u3068\u306a\u308b\u60c5\u5831\u304c\u5931\u308f\u308c\u308b\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n
      • \u524a\u9664\u5236\u9650\uff1a<\/strong> \u5b50\u30ec\u30b3\u30fc\u30c9\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u3001\u30b7\u30b9\u30c6\u30e0\u306f\u89aa\u306e\u524a\u9664\u3092\u963b\u6b62\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7ba1\u7406\u8005\u304c\u307e\u305a\u5b50\u30ec\u30b3\u30fc\u30c9\u3092\u624b\u52d5\u3067\u89e3\u6c7a\u3059\u308b\u3088\u3046\u5f37\u5236\u3055\u308c\u307e\u3059\u3002\u30c7\u30fc\u30bf\u306e\u4fdd\u5b58\u306b\u3068\u3063\u3066\u6700\u3082\u5b89\u5168\u306a\u9078\u629e\u80a2\u3067\u3059\u3002<\/li>\n
      • NULL\u8a2d\u5b9a\uff1a<\/strong> \u89aa\u30ec\u30b3\u30fc\u30c9\u304c\u524a\u9664\u3055\u308c\u305f\u3068\u304d\u3001\u5b50\u30ec\u30b3\u30fc\u30c9\u306e\u5916\u90e8\u30ad\u30fc\u304cNULL\u306b\u8a2d\u5b9a\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u5b50\u30ec\u30b3\u30fc\u30c9\u306f\u4fdd\u6301\u3055\u308c\u307e\u3059\u304c\u3001\u95a2\u4fc2\u6027\u306e\u30ea\u30f3\u30af\u304c\u5207\u65ad\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n

        \u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u884c\u3046\u969b\u306b\u306f\u3001\u3069\u306e\u52d5\u4f5c\u304c\u8981\u4ef6\u306b\u5408\u81f4\u3059\u308b\u304b\u3092\u5224\u65ad\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u56f3\u9762\u304c\u53b3\u683c\u306a\u968e\u5c64\u69cb\u9020\u3092\u793a\u3057\u3066\u3044\u308b\u306e\u306b\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304cNULL\u8a2d\u5b9a\u3092\u8a31\u53ef\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u4e0d\u4e00\u81f4\u304c\u751f\u3058\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3092\u4fee\u6b63\u3059\u308b\u306b\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u306e\u5236\u7d04\u3092\u5909\u66f4\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u65e2\u5b58\u306e\u30c7\u30fc\u30bf\u304c\u3042\u308b\u30c6\u30fc\u30d6\u30eb\u306e\u5236\u7d04\u3092\u5909\u66f4\u3059\u308b\u969b\u306f\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u5236\u7d04\u9055\u53cd\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001\u307e\u305a\u30c7\u30fc\u30bf\u3092\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

        \u30c7\u30fc\u30bf\u306e\u305a\u308c\u306e\u9632\u6b62<\/h3>\n

        \u30b9\u30ad\u30fc\u30de\u306e\u305a\u308c\u306f\u3001\u7269\u7406\u7684\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u56f3\u9762\u3092\u66f4\u65b0\u305b\u305a\u306b\u5909\u66f4\u3055\u308c\u305f\u3068\u304d\u306b\u767a\u751f\u3057\u307e\u3059\u3002\u3053\u308c\u3092\u9632\u3050\u305f\u3081\u306b\uff1a<\/p>\n

          \n
        • \u30b9\u30ad\u30fc\u30de\u5b9a\u7fa9\u306b\u5bfe\u3057\u3066\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3092\u5c0e\u5165\u3059\u308b\u3002<\/li>\n
        • \u3059\u3079\u3066\u306e\u5909\u66f4\u3092\u8a18\u9332\u3059\u308b\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3002<\/li>\n
        • \u56f3\u9762\u3092\u30e9\u30a4\u30d6\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b9\u30ad\u30fc\u30de\u3068\u6bd4\u8f03\u3059\u308b\u5b9a\u671f\u7684\u306a\u76e3\u67fb\u3092\u5b9f\u65bd\u3059\u308b\u3002<\/li>\n
        • \u3059\u3079\u3066\u306e\u95a2\u4fc2\u6027\u306e\u5909\u66f4\u306e\u7406\u7531\u3092\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u5c65\u6b74\u306b\u8a18\u9332\u3059\u308b\u3002<\/li>\n<\/ul>\n

          \u4e0d\u826f\u8a2d\u8a08\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff \u26a1<\/h2>\n

          \u95a2\u4fc2\u6027\u306e\u8aa4\u308a\u306f\u30c7\u30fc\u30bf\u306e\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3059\u3060\u3051\u3067\u306a\u304f\u3001\u901f\u5ea6\u306b\u3082\u5f71\u97ff\u3059\u308b\u3002\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a8\u30f3\u30b8\u30f3\u306f\u7d50\u5408\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3068\u5236\u7d04\u306b\u4f9d\u5b58\u3057\u3066\u3044\u308b\u3002\u95a2\u4fc2\u6027\u304c\u9069\u5207\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u306a\u3044\u3068\u3001\u30a8\u30f3\u30b8\u30f3\u306f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u691c\u7d22\u3067\u306f\u306a\u304f\u30d5\u30eb\u30c6\u30fc\u30d6\u30eb\u30b9\u30ad\u30e3\u30f3\u3092\u5b9f\u884c\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n

          \u7d50\u5408\u306e\u8907\u96d1\u3055<\/h3>\n

          \u7d50\u5408\u30c6\u30fc\u30d6\u30eb\u306b\u9069\u5207\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u8907\u96d1\u306a\u591a\u5bfe\u591a\u95a2\u4fc2\u306f\u3001\u30af\u30a8\u30ea\u306e\u5b9f\u884c\u901f\u5ea6\u3092\u6307\u6570\u95a2\u6570\u7684\u306b\u9045\u304f\u3059\u308b\u3002\u30c7\u30fc\u30bf\u304c\u5897\u3048\u308b\u306b\u3064\u308c\u3066\u7d44\u307f\u5408\u308f\u305b\u306e\u6570\u304c\u5897\u52a0\u3059\u308b\u3002\u7d50\u5408\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u5916\u90e8\u30ad\u30fc\u304c\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5316\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306f\u95a2\u9023\u3059\u308b\u884c\u3092\u8fc5\u901f\u306b\u691c\u7d22\u3067\u304d\u305a\u3001CPU\u4f7f\u7528\u7387\u304c\u9ad8\u304f\u306a\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5fdc\u7b54\u6642\u9593\u304c\u9045\u304f\u306a\u308b\u3002<\/p>\n

          \u30ed\u30c3\u30af\u7af6\u5408<\/h3>\n

          \u8aa4\u3063\u305f\u5236\u7d04\u5b9a\u7fa9\u306f\u904e\u5270\u306a\u30ed\u30c3\u30af\u3092\u5f15\u304d\u8d77\u3053\u3059\u3002\u524a\u9664\u64cd\u4f5c\u304c\u5927\u304d\u306a\u30c6\u30fc\u30d6\u30eb\u306b\u9023\u9396\u7684\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u5834\u5408\u3001\u30b7\u30b9\u30c6\u30e0\u306f\u9577\u6642\u9593\u306b\u308f\u305f\u308a\u884c\u3092\u30ed\u30c3\u30af\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u4ed6\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u30c7\u30fc\u30bf\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u304f\u306a\u308b\u3002\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u554f\u984c\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3067\u306f\u3001\u95a2\u4fc2\u6027\u306e\u5236\u7d04\u3092\u78ba\u8a8d\u3057\u3001\u4e0d\u8981\u306a\u884c\u30ec\u30d9\u30eb\u306e\u30ed\u30c3\u30af\u3092\u5f15\u304d\u8d77\u3053\u3057\u3066\u3044\u306a\u3044\u304b\u3092\u691c\u8a3c\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3002<\/p>\n

          \u30af\u30a8\u30ea\u6700\u9069\u5316<\/h3>\n

          \u6700\u9069\u5316\u3055\u308c\u305f\u30af\u30a8\u30ea\u306f\u3001\u95a2\u4fc2\u6027\u306e\u5f37\u3055\u3092\u628a\u63e1\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u524d\u63d0\u3068\u306a\u308b\u3002\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u304c\u95a2\u4fc2\u6027\u30921\u5bfe1\u3068\u8aa4\u8a8d\u3057\u3066\u3044\u308b\u304c\u5b9f\u969b\u306f1\u5bfe\u591a\u306e\u5834\u5408\u3001\u6700\u9069\u3067\u306a\u3044\u5b9f\u884c\u8a08\u753b\u3092\u9078\u629e\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30af\u30a8\u30ea\u5b9f\u884c\u8a08\u753b\u306b\u4e0d\u8981\u306a\u4e00\u6642\u30c6\u30fc\u30d6\u30eb\u3084\u30bd\u30fc\u30c8\u304c\u767a\u751f\u3059\u308b\u3002\u30af\u30a8\u30ea\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5b9a\u671f\u7684\u306b\u5206\u6790\u3059\u308b\u3053\u3068\u3067\u3001\u95a2\u4fc2\u6027\u30e1\u30bf\u30c7\u30fc\u30bf\u304c\u30a8\u30f3\u30b8\u30f3\u3092\u8aa4\u89e3\u3055\u305b\u3066\u3044\u308b\u7b87\u6240\u3092\u767a\u898b\u3067\u304d\u308b\u3002<\/p>\n

          \u4fdd\u5b88\u3068\u4e88\u9632\u6226\u7565 \ud83d\udee0\ufe0f<\/h2>\n

          \u76f4\u3061\u306e\u554f\u984c\u304c\u89e3\u6c7a\u3055\u308c\u305f\u5f8c\u306f\u3001\u4e88\u9632\u306b\u7126\u70b9\u304c\u79fb\u308b\u3002\u5805\u7262\u306aERD\u306f\u4e00\u5ea6\u304d\u308a\u306e\u4f5c\u696d\u3067\u306f\u306a\u304f\u3001\u7d99\u7d9a\u7684\u306a\u4fdd\u5b88\u304c\u5fc5\u8981\u3067\u3042\u308b\u3002\u4ee5\u4e0b\u306e\u5b9f\u8df5\u304c\u3001\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306b\u30c7\u30fc\u30bf\u306e\u5065\u5168\u6027\u3092\u7dad\u6301\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u3002<\/p>\n

            \n
          • \u547d\u540d\u898f\u5247\u3092\u6a19\u6e96\u5316\u3059\u308b\uff1a<\/strong> \u5916\u90e8\u30ad\u30fc\u5217\u304c\u4e00\u8cab\u3057\u305f\u547d\u540d\u30d1\u30bf\u30fc\u30f3\u306b\u5f93\u3046\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\uff08\u4f8b\uff1aparent_id<\/code>\uff09\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc\u4e2d\u306b\u6b20\u843d\u3057\u3066\u3044\u308b\u95a2\u4fc2\u6027\u3092\u767a\u898b\u3057\u3084\u3059\u304f\u306a\u308b\u3002<\/li>\n
          • \u81ea\u52d5\u30b9\u30ad\u30fc\u30de\u691c\u8a3c\uff1a<\/strong> \u30b9\u30ad\u30fc\u30de\u691c\u8a3c\u3092CI\/CD\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u306b\u7d71\u5408\u3059\u308b\u3002\u958b\u767a\u8005\u304c\u57fa\u6570\u30eb\u30fc\u30eb\u306b\u9055\u53cd\u3059\u308b\u30b9\u30ad\u30fc\u30de\u5909\u66f4\u3092\u30c7\u30d7\u30ed\u30a4\u3057\u3088\u3046\u3068\u3057\u305f\u5834\u5408\u3001\u30d3\u30eb\u30c9\u306f\u5931\u6557\u3059\u3079\u304d\u3067\u3042\u308b\u3002<\/li>\n
          • \u5b9a\u671f\u7684\u306a\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\uff1a<\/strong> \u69cb\u9020\u5909\u66f4\u3092\u884c\u3046\u524d\u306b\u3001\u5e38\u306b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3059\u308b\u3002\u5236\u7d04\u306e\u4fee\u6b63\u304c\u30c7\u30fc\u30bf\u3092\u7834\u640d\u3057\u305f\u5834\u5408\u306e\u5b89\u5168\u7b56\u3068\u306a\u308b\u3002<\/li>\n
          • \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u66f4\u65b0\uff1a<\/strong> \u95a2\u4fc2\u6027\u304c\u8ffd\u52a0\u307e\u305f\u306f\u524a\u9664\u3055\u308c\u305f\u3089\u3001\u3059\u3050\u306b\u56f3\u9762\u3092\u66f4\u65b0\u3059\u308b\u3002\u53e4\u304f\u306a\u3063\u305f\u56f3\u9762\u306f\u6df7\u4e71\u3092\u62db\u304d\u3001\u5c06\u6765\u306e\u30a8\u30e9\u30fc\u3092\u5f15\u304d\u8d77\u3053\u3059\u3002<\/li>\n<\/ul>\n

            \u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0\u306e\u30ec\u30d3\u30e5\u30fc<\/h3>\n

            \u53e4\u3044\u30b7\u30b9\u30c6\u30e0\u306b\u306f\u3057\u3070\u3057\u3070\u6587\u66f8\u5316\u3055\u308c\u3066\u3044\u306a\u3044\u95a2\u4fc2\u6027\u304c\u5b58\u5728\u3059\u308b\u3002\u3053\u308c\u3089\u306e\u74b0\u5883\u3067\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u884c\u3046\u969b\u306f\u6ce8\u610f\u3092\u8981\u3059\u308b\u3002\u56f3\u9762\u304c\u6b63\u3057\u3044\u3068\u4eee\u5b9a\u3057\u3066\u306f\u306a\u3089\u306a\u3044\u3002\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5185\u306e\u5916\u90e8\u30ad\u30fc\u5236\u7d04\u3092\u5206\u6790\u3059\u308b\u3053\u3068\u3067\u3001\u30b9\u30ad\u30fc\u30de\u3092\u9006\u8a2d\u8a08\u3059\u308b\u3002\u5f37\u5236\u3055\u308c\u3066\u3044\u306a\u3044\uff08\u7121\u52b9\u5316\u3055\u308c\u305f\uff09\u304c\u30e1\u30bf\u30c7\u30fc\u30bf\u306b\u5b58\u5728\u3059\u308b\u5236\u7d04\u3092\u63a2\u3057\u3001\u3053\u308c\u3089\u306f\u904e\u53bb\u306e\u8a2d\u8a08\u8a66\u307f\u306e\u6b8b\u9ab8\u3067\u3042\u308b\u3053\u3068\u304c\u591a\u3044\u3002<\/p>\n

            \u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3068\u5354\u50cd<\/h3>\n

            \u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\u306f\u5354\u50cd\u4f5c\u696d\u3067\u3042\u308b\u3002\u958b\u767a\u8005\u3001DBA\u3001\u30d3\u30b8\u30cd\u30b9\u30a2\u30ca\u30ea\u30b9\u30c8\u306f\u30eb\u30fc\u30eb\u306b\u3064\u3044\u3066\u5408\u610f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u8aa4\u89e3\u306fERD\u5185\u306e\u300c\u9759\u304b\u306a\u30a8\u30e9\u30fc\u300d\u3092\u5f15\u304d\u8d77\u3053\u3059\u3053\u3068\u304c\u591a\u3044\u3002\u30c1\u30fc\u30e0\u3068\u56f3\u9762\u3092\u78ba\u8a8d\u3059\u308b\u5b9a\u671f\u7684\u306a\u30ec\u30d3\u30e5\u30fc\u4f1a\u8b70\u3092\u958b\u50ac\u3059\u308b\u3002\u30a8\u30c3\u30b8\u30b1\u30fc\u30b9\u306b\u3064\u3044\u3066\u5177\u4f53\u7684\u306a\u8cea\u554f\u3092\u6295\u3052\u304b\u3051\u308b\uff1a\u300c\u3053\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u524a\u9664\u3055\u308c\u305f\u3089\u3069\u3046\u306a\u308b\u304b\uff1f\u300d\u3001\u300c\u3053\u306e\u95a2\u4fc2\u6027\u304c\u7834\u65ad\u3055\u308c\u305f\u3089\u3069\u3046\u306a\u308b\u304b\uff1f\u300d\u3002\u3053\u3046\u3057\u305f\u524d\u5411\u304d\u306a\u8cea\u554f\u306b\u3088\u308a\u3001\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u524d\u306b\u6f5c\u5728\u7684\u306a\u6df7\u4e71\u3092\u7279\u5b9a\u3067\u304d\u308b\u3002<\/p>\n

            \u30c7\u30fc\u30bf\u6574\u5408\u6027\u306b\u95a2\u3059\u308b\u7d50\u8ad6 \ud83c\udfc1<\/h2>\n

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