質問編集履歴
2
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| 8|hh |aa |
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user_id = PK
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@@ -25,3 +25,87 @@
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他、色々とご指摘やアドバイスを頂けると助かります。
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--追記---
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添付した写真のテキスト
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※行データの数やpasswordの内容は要約してます。
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PK = primary key
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FK = foreign key
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FK(親のテーブルの紐づいたカラム名)
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usersテーブル
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|user_id|user_name|password|
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| 4|dd |aa |
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| 7|gg |aa |
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| 8|hh |aa |
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-----------------------------
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user_id = PK
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addressesテーブル
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|address_id|address_code|address_prefecture|address_stree|registrant|
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| 1|000-0000 |東京都 |渋谷区 | 1|
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| 2|000-0000 |東京都 |渋谷区 | 2|
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| 3|000-0000 |東京都 |渋谷区 | 2|
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| 4|000-0000 |東京都 |渋谷区 | 3|
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---------------------------------------------------------------------
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address_id = PK registrant = FK (user_id)住所登録者
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travelテーブル
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|address_id|user_id|
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| 1| 1|
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| 2| 2|
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| 1| 2|
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---------------------
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address_id = FK(address_id) , user_id = FK(user_id) 旅行者
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