Table "Person" having
"SSN",
"Name",
"Address"
和另一
Table "Contacts" having
"Contact_ID",
"Contact_Type",
"SSN" (primary key of Person)
同样
Table "Records" having
"Record_ID",
"Record_Type",
"SSN" (primary key of Person)
现在我想,当我改变或亲自表中相应的变化在其他2个表更新SSN。
- 如果有人可以帮助我为
- 或者如何触发通过外键约束表
+1提及一个主键不应该代表任何业务细节,并提供一个替代方案的提问者。 – 2010-05-12 12:37:05