<\/span><\/h2>\n\n\n\n\u307e\u305a\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u8ad6\u7406\u8a2d\u8a08\u306b\u304b\u304b\u308b\u6642\u9593\u3092\u5727\u5012\u7684\u306b\u6e1b\u3089\u3059\u30c4\u30fc\u30eb\u306e\u7d39\u4ecb\u3060\u3002<\/p>\n\n\n\n
\u7d50\u8ad6\u304b\u3089\u8a00\u3046\u3068PlantUML\u3092\u4f7f\u3046\u306e\u304c\u304a\u3059\u3059\u3081\u3060\u3002PlantUML\u3067\u3042\u308c\u3070\u4ed8\u52a0\u4fa1\u5024\u304c\u9ad8\u3044\u300c\u8a2d\u8a08\u3059\u308b\u300d\u4f5c\u696d\u306b\u96c6\u4e2d\u3067\u304d\u308b\u304b\u3089\u3060\u3002<\/p>\n\n\n\n
\u305d\u3082\u305d\u3082\u3001\u8ad6\u7406\u8a2d\u8a08\u306e\u4f5c\u696d\u3092\u5927\u5225\u3059\u308b\u3068\u4ee5\u4e0b\uff12\u3064\u306b\u5206\u89e3\u3067\u304d\u308b\u3002
\u30fb\u5177\u4f53\u7684\u306a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u8a2d\u8a08\u3059\u308b
\u30fb\u5404\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u95a2\u9023\u306a\u3069\u3092\u56f3\u793a\u3059\u308b\uff08\u56f3\u3092\u307f\u3084\u3059\u304f\u914d\u7f6e\u3057\u3066\u3001\u77e2\u5370\u3067\u591a\u91cd\u5ea6\u3092\u793a\u3057\u305f\u308a\uff09<\/p>\n\n\n\n
\u5f8c\u8005\u306e\u56f3\u793a\u3059\u308b\u4f5c\u696d\u306f\u4ed8\u52a0\u4fa1\u5024\u304c\u4f4e\u3044\u5272\u306b\u624b\u9593\u304c\u304b\u304b\u308b\u3002\u4f5c\u696d\u8005\u7684\u306b\u306f\u3001\u81ea\u5206\u306e\u982d\u306e\u4e2d\u306e\u60c5\u5831\u3092\u4ed6\u4eba\u306b\u3082\u308f\u304b\u308a\u3084\u3059\u3044\u3088\u3046\u306b\u6574\u5f62\u3057\u3066\u3044\u308b\u3060\u3051\u3060\u3002\u3057\u304b\u3057\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u6570\u304c\u591a\u304f\u306a\u308b\u3068\u3001\u898b\u3084\u3059\u304f\u3059\u308b\u5de5\u592b\u306b\u304b\u306a\u308a\u306e\u6642\u9593\u304c\u304b\u304b\u308b\u3002<\/p>\n\n\n\n
\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30aa\u30f3\u30e9\u30a4\u30f3\u30b9\u30af\u30fc\u30eb\u306e\u8ad6\u7406\u8a2d\u8a08\u3092\u884c\u3063\u305f\u3068\u3057\u3088\u3046\u3002<\/p>\n\n\n\n![\"\"](\"https:\/\/ripurun.com\/media\/wp-content\/uploads\/2023\/09\/\u30aa\u30f3\u30e9\u30a4\u30f3\u30b9\u30af\u30fc\u30eb\u306e\u8ad6\u7406\u8a2d\u8a08-1-1024x549.png\")
<\/figure>\n\n\n\n\u3053\u3053\u306b\u5909\u66f4\u3092\u52a0\u3048\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u4eca\u5b58\u5728\u3057\u3066\u3044\u308b\u7bb1\u3092\u79fb\u52d5\u3057\u305f\u308a\u3059\u308b\u5fc5\u8981\u304c\u51fa\u3066\u304f\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u306e\u304c\u308f\u304b\u308b\u3068\u601d\u3046\u3002\u4f8b\u3068\u3057\u3066\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5909\u66f4\u3092\u3059\u308b\u3068\u3057\u3088\u3046\u3002
\u30fb\u4e00\u3064\u306e\u30ec\u30c3\u30b9\u30f3\u3054\u3068\u306b\u8907\u6570\u306e\u6559\u6388\u304c\u62c5\u5f53\u3067\u304d\u308b
\u30fb\u4e00\u3064\u306e\u8cc7\u6599\u3092\u8907\u6570\u306e\u6559\u6388\u306b\u3088\u3063\u3066\u4f5c\u6210\u3067\u304d\u308b<\/p>\n\n\n\n| \u5909\u66f4\u524d<\/th> | \u5909\u66f4\u5f8c<\/th><\/tr><\/thead> |
|---|
| <\/td> | ![\"\"](\"https:\/\/ripurun.com\/media\/wp-content\/uploads\/2023\/09\/\u30aa\u30f3\u30e9\u30a4\u30f3\u30b9\u30af\u30fc\u30eb\u306e\u8ad6\u7406\u8a2d\u8a08\u306e\u5909\u66f4\u5f8c.png\") <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u4e0a\u8a18\u306e\u753b\u50cf\u306e\u901a\u308a\u3001\u8907\u6570\u306e\u7bb1\u3092\u79fb\u52d5\u3057\u3001\u95a2\u9023\u4ed8\u3051\u306e\u77e2\u5370\u3092\u4ed8\u3051\u76f4\u3059\u5fc5\u8981\u304c\u3042\u308b\u3002<\/p>\n\n\n\n \u3057\u304b\u3057\u3001PlantUML\u3067\u3042\u308c\u3070\u4f5c\u696d\u8005\u306f\u524d\u8005\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u8a2d\u8a08\u3060\u3051\u3092\u884c\u3048\u3070\u826f\u304f\u3001\u5f8c\u8005\u306e\u56f3\u793a\u5316\u306f\u30c4\u30fc\u30eb\u5074\u3067\u52dd\u624b\u306b\u884c\u3063\u3066\u304f\u308c\u308b\u3002<\/p>\n\n\n\n <\/span>PlantUML\u3067\u5b9f\u969b\u306b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u3092\u884c\u3046: \u5177\u4f53\u7684\u306a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u8a2d\u8a08\u3059\u308b<\/span><\/h3>\n\n\n\n\u3053\u3053\u3067\u306f\u5177\u4f53\u7684\u306a\u4f5c\u696d\u624b\u9806\u3092\u4f8b\u306b\u3057\u3066\u3001PlantUML\u306e\u4f7f\u3044\u65b9\u3092\u898b\u3066\u307f\u3088\u3046\u3002<\/p>\n\n\n\n \u307e\u305a\u306f\u5177\u4f53\u7684\u306a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u8a2d\u8a08\u3059\u308b\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\uff12\u3064\u306e\u30b9\u30c6\u30c3\u30d7\u3092\u884c\u3046\u3002
\u30fb\u3069\u306e\u3088\u3046\u306a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u304c\u5fc5\u8981\u304b\u3092\u6d17\u3044\u51fa\u3059
\u30fb\u5404\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306b\u5fc5\u8981\u306a\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u6d17\u3044\u51fa\u3059<\/p>\n\n\n\n \u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u6d17\u3044\u51fa\u3059<\/strong>
\u30b3\u30fc\u30c9\u3068\u305d\u306e\u51fa\u529b\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3060\u3002<\/p>\n\n\n\n\nclass students {
}
class courses {
}
class studentsCourses {
}<\/p>\n<\/blockquote>\n\n\n\n ![\"\"](\"https:\/\/ripurun.com\/media\/wp-content\/uploads\/2023\/09\/DB\u306e\u8ad6\u7406\u8a2d\u8a08\u624b\u9806\uff11-\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u6d17\u3044\u51fa\u3059.png\") <\/p>\n\n\n\n
\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u6d17\u3044\u51fa\u3059<\/strong>
\u30b3\u30fc\u30c9\u3068\u305d\u306e\u51fa\u529b\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3060\u3002<\/p>\n\n\n\n\nclass students {
\u3000id: int
\u3000email: string #unique
\u3000 name: string
\u3000startedAt: datetime
}
class courses {
\u3000id: int
\u3000 name: string
}
class studentsCourses {
\u3000 id: int
\u3000 student_id: int
\u3000 course_id: int
}
note bottom of studentsCourses
\u3000Unique constraint on (student_id, course_id)
end note<\/p>\n<\/blockquote>\n\n\n\n ![\"\"](\"https:\/\/ripurun.com\/media\/wp-content\/uploads\/2023\/09\/DB\u306e\u8ad6\u7406\u8a2d\u8a08\u624b\u9806\uff11-\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u6d17\u3044\u51fa\u3059-1.png\") <\/p>\n\n\n\n
<\/span>PlantUML\u3067\u5b9f\u969b\u306b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u3092\u884c\u3046: \u5404\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u95a2\u9023\u306a\u3069\u3092\u56f3\u793a\u3059\u308b<\/span><\/h3>\n\n\n\n\u3053\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u306f\u3001\u6d17\u3044\u51fa\u3057\u305f\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u9593\u306e\u95a2\u9023\u3065\u3051\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u3059\u308b\u305f\u3081\u306b\u3001\u672c\u6765\u3067\u3042\u308c\u3070\u4ee5\u4e0b\u306e\uff12\u3064\u3092\u884c\u3046\u3002
\u30fb\u898b\u3084\u3059\u3044\u4f4d\u7f6e\u306b\u5404\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u914d\u7f6e\u3059\u308b
\u30fb\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u9593\u306e\u7d10\u4ed8\u3051\u3092\u77e2\u5370\u3092\u4f7f\u3063\u3066\u8868\u73fe\u3059\u308b<\/p>\n\n\n\n \u3057\u304b\u3057\u3001\u3053\u308c\u306fPlantUML\u3067\u306f\u95a2\u9023\u4ed8\u3051\u306e\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3060\u3051\u3067\u5927\u4e08\u592b\u3060\u3002\u914d\u7f6e\u3084\u77e2\u5370\u306e\u63cf\u753b\u81ea\u4f53\u306f\u30c4\u30fc\u30eb\u5074\u304c\u3084\u3063\u3066\u304f\u308c\u308b\u3002<\/p>\n\n\n\n \u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u9593\u306e\u95a2\u9023\u3092\u56f3\u793a\u3059\u308b<\/strong>
\u30b3\u30fc\u30c9\u3068\u305d\u306e\u51fa\u529b\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3060\u3002<\/p>\n\n\n\n\nclass students {
\u3000 id: int
\u3000 email: string #unique
\u3000 name: string
\u3000startedAt: datetime
}
class courses {
\u3000id: int
\u3000name: string
}
class studentsCourses {
\u3000id: int
\u3000 student_id: int
\u3000 course_id: int
}
note bottom of studentsCourses
\u3000Unique constraint on (student_id, course_id)
end note
courses ||–o{ studentsCourses
students ||–o{ studentsCourses<\/p>\n<\/blockquote>\n\n\n\n ![\"\"](\"https:\/\/ripurun.com\/media\/wp-content\/uploads\/2023\/09\/DB\u306e\u8ad6\u7406\u8a2d\u8a08\u624b\u9806\uff12-\u95a2\u9023\u4ed8\u3051\u3092\u56f3\u793a\u3059\u308b.png\") <\/p>\n\n\n\n
<\/span>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u7269\u7406\u8a2d\u8a08\u3092\u5727\u5012\u7684\u306b\u697d\u306b\u3059\u308b\u30c4\u30fc\u30eb\uff1aPlantUML\uff0bChatGPT<\/span><\/h2>\n\n\n\n\u6b21\u306b\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u7269\u7406\u8a2d\u8a08\u306b\u304b\u304b\u308b\u6642\u9593\u3092\u5727\u5012\u7684\u306b\u6e1b\u3089\u3059\u30c4\u30fc\u30eb\u306e\u7d39\u4ecb\u3060\u3002<\/p>\n\n\n\n \u7d50\u8ad6\u304b\u3089\u8a00\u3046\u3068PlantUML\u3068ChatGPT\u3092\u4f7f\u3046\u306e\u304c\u304a\u3059\u3059\u3081\u3060\u3002PlantUML\u3092\u3082\u3068\u306b\u3057\u3066\u3001\u307b\u307c\u81ea\u52d5\u3067\u5fc5\u8981\u306a\u30b3\u30fc\u30c9\u3092\u51fa\u529b\u3057\u3066\u304f\u308c\u308b\u305f\u3081\u3060\u3002<\/p>\n\n\n\n \u4f8b\u3048\u3070\u3001\u524d\u306e\u7ae0\u3067\u30b5\u30f3\u30d7\u30eb\u3068\u3057\u3066\u4f7f\u3063\u3066\u3044\u305f\u300c\u751f\u5f92\u3068\u30b3\u30fc\u30b9\u300d\u306eER\u56f3\u306ePlantUML\u3092\u3082\u3068\u306b\u3001\u7269\u7406\u8a2d\u8a08\u306b\u4f7f\u3046\u30b3\u30fc\u30c9\u3092\u51fa\u529b\u3057\u3066\u3082\u3089\u3046\u3002<\/p>\n\n\n\n \u3053\u3053\u3067\u306f\u3001\u7b46\u8005\u304c\u3088\u304f\u4f7f\u3046\u4ee5\u4e0b\u4e8c\u3064\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u30b3\u30fc\u30c9\u3092\u51fa\u529b\u3057\u3066\u3082\u3089\u3046\u3002
\u30fbRuby on Rails
\u30fbPrisma\uff08Node.js & TypeScript\u306eORM\uff09<\/p>\n\n\n\n <\/span>Ruby on Rails\u306e\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u3092PlantUML\uff0bChatGPT\u3067\u4f5c\u308b<\/span><\/h3>\n\n\n\n\n
class users {
\u3000id: int
\u3000email: string #unique
\u3000name: string
}<\/p>\n\n\n\n
class courses {
\u3000id: int
\u3000name: string
}<\/p>\n\n\n\n class usersCourses {
\u3000id: int
\u3000user_id: int
\u3000course_id: int
}<\/p>\n\n\n\n note bottom of usersCourses
\u3000Unique constraint on (user_id, course_id)
end note<\/p>\n\n\n\n courses ||–o{ usersCourses
users ||–o{ usersCourses<\/p>\n\n\n\n \u3053\u308c\u3067Rails\u306e\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u66f8\u3044\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/blockquote>\n\n\n\n![\"\"](\"https:\/\/ripurun.com\/media\/wp-content\/uploads\/2023\/09\/PlantUml\u304b\u3089Rails\u306e\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u66f8\u3044\u3066\u3082\u3089\u3046.png\") <\/figure>\n\n\n\n\u30e6\u30cb\u30fc\u30af\u30ad\u30fc\u5236\u7d04\u307e\u3067\u3057\u3063\u304b\u308a\u3064\u3051\u305f\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u66f8\u3044\u3066\u304f\u308c\u305f\u3002<\/p>\n\n\n\n <\/span>Prisma\u306e\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u3092PlantUML\uff0bChatGPT\u3067\u4f5c\u308b<\/span><\/h3>\n\n\n\n\n
class users {
\u3000id: int
\u3000email: string #unique
\u3000name: string
}<\/p>\n\n\n\n
class courses {
\u3000id: int
\u3000name: string
}<\/p>\n\n\n\n class usersCourses {
\u3000id: int
\u3000user_id: int
\u3000course_id: int
}<\/p>\n\n\n\n note bottom of usersCourses
\u3000Unique constraint on (user_id, course_id)
end note<\/p>\n\n\n\n courses ||–o{ usersCourses
users ||–o{ usersCourses<\/p>\n\n\n\n \u3053\u308c\u3067Prisma\u306e\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u66f8\u3044\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/blockquote>\n\n\n\n![\"\"](\"https:\/\/ripurun.com\/media\/wp-content\/uploads\/2023\/09\/PlantUml\u304b\u3089Prisma\u306e\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u66f8\u3044\u3066\u3082\u3089\u3046.png\") <\/figure>\n\n\n\n\u3053\u3061\u3089\u3082\u554f\u984c\u306a\u304f\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u4f5c\u6210\u3067\u304d\u305f\u3002<\/p>\n\n\n\n <\/span>\u307e\u3068\u3081<\/span><\/h2>\n\n\n\n\u3053\u306e\u8a18\u4e8b\u3067\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u306b\u4f7f\u3048\u308b\u30c4\u30fc\u30eb\u3068\u3057\u3066PlantUML\u3068ChatGPT\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u7d39\u4ecb\u3057\u305f\u3002<\/p>\n\n\n\n \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u3067\u306f\u4ed8\u52a0\u4fa1\u5024\u306e\u4f4e\u3044\u4f5c\u696d\u3092\u3069\u3093\u3069\u3093\u30c4\u30fc\u30eb\u306b\u4efb\u305b\u3066\u3057\u307e\u3063\u3066\u3001\u3088\u308a\u672c\u8cea\u7684\u306a\u300c\u8a2d\u8a08\u300d\u306b\u96c6\u4e2d\u3059\u308b\u3053\u3068\u304c\u304a\u3059\u3059\u3081\u3060\u3002<\/p>\n\n\n\n \u3053\u306e\u8a18\u4e8b\u304c\u3001\u8aad\u8005\u306e\u65b9\u304c\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u3092\u3059\u308b\u969b\u306b\u3001\u3088\u308a\u672c\u8cea\u7684\u306a\u4f5c\u696d\u306b\u6642\u9593\u3092\u5272\u3051\u308b\u3053\u3068\u306b\u3064\u306a\u304c\u3063\u3066\u304f\u308c\u305f\u3089\u5e78\u3044\u3060\u3002<\/p>\n","protected":false},"excerpt":{"rendered":" \u300c\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u306f\u8ad6\u7406\u8a2d\u8a08\u306e\u6bb5\u968e\u3060\u3068\u56f3\u3092\u63cf\u304f\u306e\u306b\u6642\u9593\u304b\u304b\u308b\u3057\u3001\u7269\u7406\u8a2d\u8a08\u3060\u3068ORM\u306b\u5408\u308f\u305b\u305f\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u66f8\u304f\u306e\u304c\u3081\u3093\u3069\u304f\u3055\u3044\u300d \u3053\u3093\u306a\u60a9\u307f\u306f\u306a\u3044\u3060\u308d\u3046\u304b\u3002 \u78ba\u304b\u306b\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u306e\u8ad6\u7406\u8a2d\u8a08\u3067\u306f ER\u56f3\u3092\u66f8\u304f\u969b\u306b\u3001 […]<\/p>\n","protected":false},"author":1,"featured_media":418,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-407","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-db-design"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t |