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Database 在一对一关系中，两个子集表与外键共享来自另一个表的相同主键_Database_Relationship_Relational - Fatal编程技术网
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Database 在一对一关系中，两个子集表与外键共享来自另一个表的相同主键

database

Database 在一对一关系中，两个子集表与外键共享来自另一个表的相同主键,database,relationship,relational,Database,Relationship,Relational,我一直在到处寻找我的问题，但我找不到答案。 （这里的所有内容都是一个例子） 我有一张产品表 产品（父表） idProduct（PK）\uuuuuuuuuu\ProdName\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu 1 Top Gun 5.95 Movie 2 Great expectatio

我一直在到处寻找我的问题，但我找不到答案。 （这里的所有内容都是一个例子） 我有一张产品表

产品（父表）

idProduct（PK）\uuuuuuuuuu\ProdName\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

    1             Top Gun          5.95         Movie
    2        Great expectations    12.45        Book
    3            Fifa 2013         14.99        Game
    4              Ghost           6.75         Movie

    1               3               Sports           XBOX 360
电影（儿童表1）

idMovie（PK）\uuuuuuuuidProduct（FK）\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

    1               1               93             Action
    2               4               87             Drama
书籍（儿童表2）

idBook（主键）\uuuuuuuuiProduct（FK）\uuuuuuuuuiAuthor（FK）\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

    1               2               43                500
游戏（儿童表3）

idGame（PK）\uuuuuuuuuidProduct（FK）\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

    1             Top Gun          5.95         Movie
    2        Great expectations    12.45        Book
    3            Fifa 2013         14.99        Game
    4              Ghost           6.75         Movie

    1               3               Sports           XBOX 360
问题是，我希望在产品表和子表之间建立一对一的关系。 因此，如果来自PRODUCTS的idProduct上的主键作为外键位于子表上，则该值不会在同一个表或其他两个表上重复（作为一对一，但使用多个表）。 我使用MySQL WorkBench作为RDBMS，我必须指定哪些规则才能做到这一点

谢谢你的帮助

对不起，我的英语不是我的母语。

您可以将子表中的外键作为主键，这样您就可以解决子表中的一对多问题

关于跨子表，在插入记录之前，也许可以使用
触发器
检查PK是否存在于其他位置