Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e\u5b66\u7fd2\u3092\u9032\u3081\u308b\u3068\u3001\u5fc5\u305a\u3068\u8a00\u3063\u3066\u3044\u3044\u307b\u3069\u300c\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\uff08RDB\uff09\u300d\u306b\u51fa\u4f1a\u3044\u307e\u3059\u3002MySQL\u3001PostgreSQL\u3001SQLite\u3001Oracle\u3001SQL Server \u306a\u3069\u306f\u3059\u3079\u3066 RDB \u306e\u4ef2\u9593\u3067\u3059\u3002<\/p>\n
RDB \u306f\u300c\u30c7\u30fc\u30bf\u3092\u8868\uff08\u30c6\u30fc\u30d6\u30eb\uff09\u3068\u3057\u3066\u6301\u3061\u3001\u8868\u3068\u8868\u3092\u95a2\u9023\uff08\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\uff09\u3067\u3064\u306a\u3050\u300d\u3068\u3044\u3046\u4e00\u8cab\u3057\u305f\u8003\u3048\u65b9\u306e\u4e0a\u306b\u6210\u308a\u7acb\u3063\u3066\u3044\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u30fb\u4e3b\u30ad\u30fc\u30fb\u5916\u90e8\u30ad\u30fc\u30fb\u6b63\u898f\u5316\u30fb\u7d50\u5408\u30fb\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30fb\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3068\u3044\u3063\u305f\u57fa\u672c\u6982\u5ff5\u3092\u3001\u56f3\u3067\u6574\u7406\u3057\u306a\u304c\u3089\u5165\u9580\u8005\u5411\u3051\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n
RDB \u306e\u300c\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb\uff08\u95a2\u4fc2\uff09\u300d\u306f\u3001\u6570\u5b66\u306e\u96c6\u5408\u3068\u95a2\u4fc2\u306e\u7406\u8ad6\u306b\u7531\u6765\u3057\u307e\u3059\u304c\u3001\u5b9f\u52d9\u3067\u307e\u305a\u62bc\u3055\u3048\u308b\u3079\u304d\u306f\u6b21\u306e\u30b7\u30f3\u30d7\u30eb\u306a\u30a4\u30e1\u30fc\u30b8\u3067\u5341\u5206\u3067\u3059\u3002<\/p>\n
\u307e\u305a\u306f1\u679a\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
users \u30c6\u30fc\u30d6\u30eb\n+----+----------+---------------------+\n| id | name | email |\n+----+----------+---------------------+\n| 1 | \u7530\u4e2d | tanaka@example.com |\n| 2 | \u4f50\u85e4 | sato@example.com |\n| 3 | \u9234\u6728 | suzuki@example.com |\n+----+----------+---------------------+<\/pre>\n
id<\/code> name<\/code> email<\/code> \u306e\u3088\u3046\u306a\u5c5e\u6027\u3002\u5217\u3054\u3068\u306b\u578b\u304c\u6c7a\u307e\u308b<\/li>\n- \u30ec\u30b3\u30fc\u30c9\uff08\u884c\uff09<\/strong>: \u300c1\u4eba\u5206\u306e\u30c7\u30fc\u30bf\u300d\u306e\u3088\u3046\u306a\u610f\u5473\u3042\u308b\u3072\u3068\u307e\u3068\u307e\u308a<\/li>\n
- \u30c6\u30fc\u30d6\u30eb<\/strong>: \u540c\u3058\u69cb\u9020\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u96c6\u3081\u305f\u3082\u306e<\/li>\n<\/ul>\n
\u4e3b\u30ad\u30fc\uff08Primary Key\uff09\u2014 \u884c\u3092\u4e00\u610f\u306b\u8b58\u5225\u3059\u308b<\/h2>\n
\u30c6\u30fc\u30d6\u30eb\u306e\u4e2d\u3067\u300c\u305d\u306e1\u884c\u3092\u78ba\u5b9f\u306b\u7279\u5b9a\u3067\u304d\u308b\u5217\u300d\u3092\u4e3b\u30ad\u30fc<\/strong>\u3068\u547c\u3073\u307e\u3059\u3002\u4e0a\u306e\u4f8b\u3067\u306f id<\/code> \u304c\u4e3b\u30ad\u30fc\u3067\u3059\u3002\u4e3b\u30ad\u30fc\u306f\u4e00\u610f\uff08\u91cd\u8907\u3057\u306a\u3044\uff09<\/strong>\u3067NOT NULL\uff08\u7a7a\u306b\u3067\u304d\u306a\u3044\uff09<\/strong>\u3068\u3044\u3046\u6027\u8cea\u3092\u6301\u3061\u307e\u3059\u3002<\/p>\n\u540d\u524d\u3084\u30e1\u30fc\u30eb\u306f\u5909\u308f\u308a\u3046\u308b\u3057\u91cd\u8907\u3082\u3057\u3046\u308b\u305f\u3081\u3001\u5909\u308f\u3089\u306a\u3044\u30fb\u91cd\u8907\u3057\u306a\u3044\u756a\u53f7<\/strong>\u30921\u672c\u7528\u610f\u3057\u3066\u300c\u3053\u306e\u884c\u306f\u3053\u308c\u300d\u3068\u6307\u3057\u793a\u305b\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u5b9f\u52d9\u3067\u306f\u9023\u756a\u306e id<\/code>\uff08\u30b5\u30ed\u30b2\u30fc\u30c8\u30ad\u30fc\uff09\u3092\u4e3b\u30ad\u30fc\u306b\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n\u5916\u90e8\u30ad\u30fc\uff08Foreign Key\uff09\u2014 \u30c6\u30fc\u30d6\u30eb\u3092\u3064\u306a\u3050<\/h2>\n
RDB \u306e\u771f\u4fa1\u306f\u3001\u8907\u6570\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u95a2\u9023\u3065\u3051\u3089\u308c\u308b\u70b9\u306b\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u4ed5\u7d44\u307f\u304c\u5916\u90e8\u30ad\u30fc<\/strong>\u3067\u3059\u3002<\/p>\nusers orders\n+----+--------+ +----+---------+--------+\n| id | name | | id | user_id | amount |\n+----+--------+ +----+---------+--------+\n| 1 | \u7530\u4e2d | <\u2500\u2500\u2500\u2500\u2500\u2500\u2510 | 10 | 1 | 3000 |\n| 2 | \u4f50\u85e4 | <\u2500\u2500\u2510 \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500| 11 | 1 | 1500 |\n| 3 | \u9234\u6728 | \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500| 12 | 2 | 8000 |\n+----+--------+ +----+---------+--------+\n \u2191 \u4e3b\u30ad\u30fc \u2191 \u5916\u90e8\u30ad\u30fc\uff08users.id \u3092\u53c2\u7167\uff09<\/pre>\norders.user_id<\/code> \u306f users.id<\/code> \u3092\u6307\u3059\u5916\u90e8\u30ad\u30fc\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u300c\u3069\u306e\u6ce8\u6587\u304c\u8ab0\u306e\u3082\u306e\u304b\u300d\u3092\u8fbf\u308c\u307e\u3059\u3002\u3055\u3089\u306b\u5916\u90e8\u30ad\u30fc\u306b\u306f\u53c2\u7167\u6574\u5408\u6027<\/strong>\u306e\u5f79\u5272\u304c\u3042\u308a\u3001\u5b58\u5728\u3057\u306a\u3044\u30e6\u30fc\u30b6\u30fc\u306e\u6ce8\u6587\u3092\u4f5c\u308c\u306a\u3044\u3088\u3046 DB \u5074\u3067\u9632\u3052\u307e\u3059\u3002<\/p>\n\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u7a2e\u985e \u2014 1\u5bfe\u591a\u3068\u591a\u5bfe\u591a<\/h2>\n
\u30c6\u30fc\u30d6\u30eb\u9593\u306e\u95a2\u4fc2\u306f\u4e3b\u306b3\u7a2e\u985e\u3067\u3059\u3002<\/p>\n
\u30101\u5bfe1\u3011 users 1 \u2500\u2500 1 user_profiles\n\u30101\u5bfe\u591a\u3011 users 1 \u2500\u2500< orders \uff08\u6700\u3082\u591a\u3044\uff09\n\u3010\u591a\u5bfe\u591a\u3011 students >\u2500\u2500< courses<\/pre>\n\u591a\u5bfe\u591a<\/strong>\u306f\u30c6\u30fc\u30d6\u30eb\u3092\u76f4\u63a5\u3064\u306a\u3052\u306a\u3044\u305f\u3081\u3001\u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\uff08\u7d50\u5408\u30c6\u30fc\u30d6\u30eb\uff09<\/strong>\u3092\u631f\u307f\u307e\u3059\u3002<\/p>\nstudents enrollments courses\n+----+------+ +------------+---------+ +----+------+\n| id | name | | student_id | course_id| | id | title|\n+----+------+ +------------+---------+ +----+------+\n| 1 | \u7530\u4e2d |<\u2500\u2500 | 1 | 100 |\u2500>| 100| \u6570\u5b66 |\n| 2 | \u4f50\u85e4 |<\u2500\u2500 | 1 | 200 |\u2500>| 200| \u82f1\u8a9e |\n+----+------+ | 2 | 100 | +----+------+\n +------------+---------+\n \u2191 \u4e2d\u9593\u30c6\u30fc\u30d6\u30eb<\/pre>\n\u300c\u591a\u5bfe\u591a\u3092\u898b\u305f\u3089\u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\u300d\u3068\u899a\u3048\u3066\u304a\u304f\u3068\u8a2d\u8a08\u3067\u8ff7\u3044\u307e\u305b\u3093\u3002<\/p>\n
\u6b63\u898f\u5316 \u2014 \u91cd\u8907\u3092\u306a\u304f\u3057\u3066\u77db\u76fe\u3092\u9632\u3050<\/h2>\n
\u521d\u5fc3\u8005\u304c\u3084\u308a\u304c\u3061\u306a\u306e\u304c\u30011\u679a\u306e\u5de8\u5927\u306a\u30c6\u30fc\u30d6\u30eb\u306b\u4f55\u3067\u3082\u8a70\u3081\u8fbc\u3080\u8a2d\u8a08\u3067\u3059\u3002<\/p>\n
\u60aa\u3044\u4f8b: \u3059\u3079\u30661\u679a\u306b\n+----+----------+---------------------+--------+\n| id | user_name| user_email | amount |\n+----+----------+---------------------+--------+\n| 10 | \u7530\u4e2d | tanaka@example.com | 3000 |\n| 11 | \u7530\u4e2d | tanaka@example.com | 1500 | \u2190 \u91cd\u8907\n| 12 | \u4f50\u85e4 | sato@example.com | 8000 |\n+----+----------+---------------------+--------+<\/pre>\n\u3053\u306e\u8a2d\u8a08\u306f\u66f4\u65b0\u7570\u5e38<\/strong>\uff08\u30e1\u30fc\u30eb\u5909\u66f4\u6642\u306b\u5168\u884c\u3092\u76f4\u3059\u5fc5\u8981\u304c\u3042\u308b\uff09\u3001\u7121\u99c4\u306a\u91cd\u8907<\/strong>\u3001\u633f\u5165\u7570\u5e38<\/strong>\uff08\u6ce8\u6587\u306e\u7121\u3044\u30e6\u30fc\u30b6\u30fc\u3092\u767b\u9332\u3067\u304d\u306a\u3044\uff09\u3092\u62db\u304d\u307e\u3059\u3002<\/p>\n\u89e3\u6c7a\u3059\u308b\u306e\u304c\u6b63\u898f\u5316<\/strong>\u3067\u3059\u3002\u300c1\u3064\u306e\u4e8b\u5b9f\u306f1\u304b\u6240\u306b\u3060\u3051\u6301\u3064\u300d\u3088\u3046\u306b\u8868\u3092\u5206\u5272\u3057\u307e\u3059\u3002<\/p>\nusers orders\n+----+--------+----------+ +----+---------+--------+\n| id | name | email | | id | user_id | amount |\n+----+--------+----------+ +----+---------+--------+\n| 1 | \u7530\u4e2d | tanaka.. | | 10 | 1 | 3000 |\n| 2 | \u4f50\u85e4 | sato.. | | 11 | 1 | 1500 |\n+----+--------+----------+ | 12 | 2 | 8000 |\n +----+---------+--------+<\/pre>\n\u5165\u9580\u8005\u306f\u307e\u305a\u300c\u540c\u3058\u4e8b\u5b9f\u3092\u8907\u6570\u7b87\u6240\u306b\u6301\u305f\u306a\u3044<\/strong>\u300d\u3068\u3044\u3046\u539f\u5247\u3092\u610f\u8b58\u3059\u308c\u3070\u5341\u5206\u3067\u3059\u3002\u6027\u80fd\u306e\u305f\u3081\u306b\u3042\u3048\u3066\u91cd\u8907\u3092\u8a31\u3059\u300c\u975e\u6b63\u898f\u5316\u300d\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u307e\u305a\u6b63\u3057\u304f\u6b63\u898f\u5316\u3067\u304d\u308b\u3053\u3068\u304c\u524d\u63d0\u3067\u3059\u3002<\/p>\n\u30c6\u30fc\u30d6\u30eb\u3092\u5b9a\u7fa9\u3057\u3066\u307f\u308b\uff08DDL\uff09<\/h2>\nCREATE TABLE users (\n id INTEGER PRIMARY KEY,\n name VARCHAR(50) NOT NULL,\n email VARCHAR(255) NOT NULL UNIQUE\n);\n\nCREATE TABLE orders (\n id INTEGER PRIMARY KEY,\n user_id INTEGER NOT NULL,\n amount INTEGER NOT NULL,\n FOREIGN KEY (user_id) REFERENCES users(id)\n);<\/pre>\nFOREIGN KEY ... REFERENCES<\/code> \u306b\u3088\u308a\u3001\u53c2\u7167\u6574\u5408\u6027\u304c DB \u30ec\u30d9\u30eb\u3067\u5b88\u3089\u308c\u307e\u3059\u3002<\/p>\n\u7d50\u5408\uff08JOIN\uff09\u2014 \u3064\u306a\u304c\u308a\u3092\u4f7f\u3063\u3066\u53d6\u308a\u51fa\u3059<\/h2>\n
\u5206\u5272\u3057\u305f\u30c6\u30fc\u30d6\u30eb\u306f\u3001JOIN<\/strong> \u3067\u518d\u3073\u3064\u306a\u3052\u3066\u53d6\u308a\u51fa\u3057\u307e\u3059\u3002<\/p>\nSELECT users.name, orders.amount\nFROM orders\nJOIN users ON orders.user_id = users.id\nWHERE users.name = '\u7530\u4e2d';<\/pre>\nJOIN \u306e\u7a2e\u985e\u306f\u5165\u9580\u6bb5\u968e\u3067\u306f\u6b21\u306e2\u3064\u3067\u5341\u5206\u3067\u3059\u3002<\/p>\n
INNER JOIN : \u4e21\u65b9\u306b\u5bfe\u5fdc\u3059\u308b\u884c\u304c\u3042\u308b\u3082\u306e\u3060\u3051\u8fd4\u3059\nLEFT JOIN : \u5de6\u5074\uff08users\uff09\u3092\u5168\u90e8\u6b8b\u3059\uff08\u6ce8\u6587\u304c\u7121\u3044\u4eba\u3082 NULL \u3067\u8fd4\u308b\uff09<\/pre>\n\u300c\u6ce8\u6587\u3057\u305f\u3053\u3068\u304c\u306a\u3044\u4eba\u3082\u542b\u3081\u305f\u3044\u300d\u306a\u3089 LEFT JOIN<\/code>\u3001\u3068\u3044\u3046\u3088\u3046\u306b\u76ee\u7684\u3067\u4f7f\u3044\u5206\u3051\u307e\u3059\u3002<\/p>\n\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u2014\u300c\u5168\u90e8\u6210\u529f\u304b\u3001\u5168\u90e8\u3084\u308a\u76f4\u3057\u300d<\/h2>\n
\u8907\u6570\u306e\u66f4\u65b0\u3092\u300c\u3072\u3068\u307e\u3068\u307e\u308a\u300d\u3068\u3057\u3066\u6271\u3046\u4ed5\u7d44\u307f\u304c\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3<\/strong>\u3067\u3059\u3002\u9001\u91d1\u304c\u5178\u578b\u4f8b\u3067\u3059\u3002<\/p>\nBEGIN;\nUPDATE accounts SET balance = balance - 1000 WHERE id = 1;\nUPDATE accounts SET balance = balance + 1000 WHERE id = 2;\nCOMMIT; -- \u9014\u4e2d\u3067\u5931\u6557\u3059\u308c\u3070 ROLLBACK; \u3067\u5168\u90e8\u306a\u304b\u3063\u305f\u3053\u3068\u306b\u3059\u308b<\/pre>\n\u7247\u65b9\u3060\u3051\u6210\u529f\u3057\u3066\u304a\u91d1\u304c\u6d88\u3048\u308b\u3001\u3068\u3044\u3063\u305f\u4e2d\u9014\u534a\u7aef\u306a\u72b6\u614b\u3092\u9632\u304e\u307e\u3059\u3002\u3053\u306e\u4fe1\u983c\u6027\u3092\u307e\u3068\u3081\u3066 ACID<\/strong>\uff08\u539f\u5b50\u6027\u30fb\u4e00\u8cab\u6027\u30fb\u72ec\u7acb\u6027\u30fb\u6c38\u7d9a\u6027\uff09\u3068\u547c\u3073\u3001RDB \u304c\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u3067\u9078\u3070\u308c\u7d9a\u3051\u308b\u5927\u304d\u306a\u7406\u7531\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\u30a4\u30f3\u30c7\u30c3\u30af\u30b9 \u2014 \u691c\u7d22\u3092\u901f\u304f\u3059\u308b\u7d22\u5f15<\/h2>\n
\u884c\u6570\u304c\u5897\u3048\u308b\u3068\u6761\u4ef6\u691c\u7d22\u304c\u9045\u304f\u306a\u308a\u307e\u3059\u3002\u5168\u884c\u3092\u4e0a\u304b\u3089\u8abf\u3079\u308b\uff08\u30d5\u30eb\u30b9\u30ad\u30e3\u30f3\uff09\u4ee3\u308f\u308a\u306b\u3001\u672c\u306e\u5dfb\u672b\u7d22\u5f15\u306e\u3088\u3046\u306a\u65e9\u898b\u8868\u3092\u6301\u3064\u306e\u304c\u30a4\u30f3\u30c7\u30c3\u30af\u30b9<\/strong>\u3067\u3059\u3002<\/p>\nCREATE INDEX idx_users_email ON users(email);<\/pre>\n\u305f\u3060\u3057\u691c\u7d22\u306f\u901f\u304f\u306a\u308b\u4e00\u65b9\u3001\u66f8\u304d\u8fbc\u307f\u306f\u7d22\u5f15\u66f4\u65b0\u5206\u3060\u3051\u9045\u304f\u306a\u308a\u5bb9\u91cf\u3082\u5897\u3048\u307e\u3059<\/strong>\u3002\u3088\u304f\u691c\u7d22\u3059\u308b\u5217\u306b\u7d5e\u3063\u3066\u4ed8\u3051\u308b\u306e\u304c\u57fa\u672c\u3067\u3059\u3002<\/p>\n\u5168\u4f53\u50cf\u306e\u307e\u3068\u3081\u56f3<\/h2>\n\u30c6\u30fc\u30d6\u30eb\uff08\u884c \u00d7 \u5217\uff09\n \u251c\u2500 \u4e3b\u30ad\u30fc : \u884c\u3092\u4e00\u610f\u306b\u8b58\u5225\n \u251c\u2500 \u5916\u90e8\u30ad\u30fc : \u4ed6\u30c6\u30fc\u30d6\u30eb\u3092\u53c2\u7167\u3057\u3064\u306a\u3050\n \u2514\u2500 \u30a4\u30f3\u30c7\u30c3\u30af\u30b9: \u691c\u7d22\u3092\u9ad8\u901f\u5316\u3059\u308b\u7d22\u5f15\n\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\uff081\u5bfe1 \/ 1\u5bfe\u591a \/ \u591a\u5bfe\u591a \u2192 \u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\uff09\n\u6b63\u898f\u5316 : \u91cd\u8907\u3092\u6392\u9664\u3057\u77db\u76fe\u3092\u9632\u3050\nJOIN : \u5206\u3051\u305f\u8868\u3092\u3064\u306a\u3044\u3067\u53d6\u308a\u51fa\u3059\n\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 : \u4e00\u9023\u306e\u66f4\u65b0\u3092\u307e\u3068\u3081\u3066\u4fdd\u8a3c\uff08ACID\uff09<\/pre>\n\u6ce8\u610f\u70b9<\/h2>\n\n- \u4e3b\u30ad\u30fc\u306f\u5fc5\u305a\u8a2d\u3051\u308b<\/li>\n
- \u5916\u90e8\u30ad\u30fc\u5236\u7d04\u306f\u7a4d\u6975\u7684\u306b\u4f7f\u3044\u3001\u30c7\u30fc\u30bf\u7834\u640d\u3092 DB \u306b\u9632\u3044\u3067\u3082\u3089\u3046<\/li>\n
- \u6b63\u898f\u5316\u3057\u3059\u304e\u30fb\u3057\u306a\u3055\u3059\u304e\u306e\u4e21\u65b9\u306b\u6ce8\u610f\uff08\u307e\u305a\u6b63\u898f\u5316\u3001\u6027\u80fd\u554f\u984c\u306f\u5b9f\u6e2c\u5f8c\u306b\u975e\u6b63\u898f\u5316\u3092\u691c\u8a0e\uff09<\/li>\n
- \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u66f8\u304d\u8fbc\u307f\u30b3\u30b9\u30c8\u3068\u306e\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u3092\u610f\u8b58\u3059\u308b<\/li>\n
- \u578b\u540d\u3084\u6587\u6cd5\u306f\u88fd\u54c1\u3054\u3068\u306b\u7570\u306a\u308b\u305f\u3081\u3001\u4f7f\u3046\u88fd\u54c1\u306e\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3082\u78ba\u8a8d\u3059\u308b<\/li>\n<\/ul>\n
\u307e\u3068\u3081<\/h2>\n\n- RDB \u306f\u30c7\u30fc\u30bf\u3092\u30c6\u30fc\u30d6\u30eb<\/strong>\u3067\u6301\u3061\u3001\u4e3b\u30ad\u30fc<\/strong>\u3067\u884c\u3092\u8b58\u5225\u3057\u3001\u5916\u90e8\u30ad\u30fc<\/strong>\u3067\u3064\u306a\u3050<\/li>\n
- \u95a2\u4fc2\u306f 1\u5bfe\u591a<\/strong>\u304c\u57fa\u672c\u3001\u591a\u5bfe\u591a\u306f\u4e2d\u9593\u30c6\u30fc\u30d6\u30eb<\/strong>\u3067\u8868\u73fe\u3059\u308b<\/li>\n
- \u6b63\u898f\u5316<\/strong>\u3067\u300c1\u3064\u306e\u4e8b\u5b9f\u306f1\u304b\u6240\u300d\u3092\u4fdd\u3061\u3001JOIN<\/strong>\u3067\u5fc5\u8981\u306a\u5f62\u306b\u7d44\u307f\u7acb\u3066\u308b<\/li>\n
- \u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\uff08ACID\uff09<\/strong>\u304c\u4fe1\u983c\u3067\u304d\u308b\u66f4\u65b0\u3092\u4fdd\u8a3c\u3057\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9<\/strong>\u304c\u691c\u7d22\u3092\u901f\u304f\u3059\u308b<\/li>\n<\/ul>\n
\u3053\u308c\u3089\u306f\u88fd\u54c1\u3092\u554f\u308f\u305a\u5171\u901a\u306e\u571f\u53f0\u3067\u3059\u3002\u307e\u305a\u306f SQLite \u3067\u5c0f\u3055\u306a\u8868\u3092\u4f5c\u308a\u3001\u5206\u3051\u3066\u30fb\u3064\u306a\u3044\u3067\u3001\u3092\u624b\u3067\u8a66\u3059\u306e\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e\u5b66\u7fd2\u3092\u9032\u3081\u308b\u3068\u3001\u5fc5\u305a\u3068\u8a00\u3063\u3066\u3044\u3044\u307b\u3069\u300c\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\uff08RDB\uff09\u300d\u306b\u51fa\u4f1a\u3044\u307e\u3059\u3002MySQL\u3001PostgreSQL\u3001SQLite\u3001Oracle\u3001SQL Server \u306a\u3069\u306f\u3059\u3079\u3066 RDB \u306e\u4ef2\u9593\u2026<\/p>\n","protected":false},"author":1,"featured_media":3280,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"vkexunit_cta_each_option":"","footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[17],"tags":[1185,1183,1184],"class_list":["post-3259","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-soliloquy","tag-primary-key","tag-rdb","tag-1184"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/qol-kk.com\/wp2\/wp-content\/uploads\/2026\/08\/image_e4396fbf.png","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/posts\/3259","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/comments?post=3259"}],"version-history":[{"count":2,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/posts\/3259\/revisions"}],"predecessor-version":[{"id":3297,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/posts\/3259\/revisions\/3297"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/media\/3280"}],"wp:attachment":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/media?parent=3259"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/categories?post=3259"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/tags?post=3259"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}