Delete a foreign key constraint when you want to remove the requirement to enforce referential integrity.
如果想要移除对强制引用完整性的要求，则可删除外键约束。
Triggers are often created to enforce referential integrity or consistency among logically related data in different tables.
触发程序通常是用来强制执行参考完整性或不同资料表间逻辑上相关之资料的一致性。
A relationship that does not enforce referential integrity appears as a thin line between the common fields supporting the relationship.
不实施参照完整性的关系在支持该关系的公共字段之间显示为细线。
CMIS repositories are not required to enforce any semantics of relationships or enforce referential integrity between the two objects of a relationship.
执行任何关系的语义或者两对象间关系的引用完整性不需要CM IS知识库。
If the line appears dotted, the DBMS does not enforce referential integrity for the relationship when rows are added or modified in the foreign-key table.
如果为点线，则当在外键表中添加或修改行时，DBMS不强制关系的引用完整性。
It is also a sound choice if you want to use database referential integrity to enforce associations.
如果你想用数据库的引用完整性来做关联，那它也是个合适的选择。
If a class wants to associate with the super Payment class, the DB can't use referential integrity to enforce it; you have to use a trigger to do so.
如果一个类想和Payment超类关联，数据库无法使用引用完整性(referential integrity)来实现它；必须使用触发器来实现它。
If a class wants to associate with the super Payment class, the DB can't use referential integrity to enforce it; you have to use a trigger to do so.
如果一个类想和Payment超类关联，数据库无法使用引用完整性(referential integrity)来实现它；必须使用触发器来实现它。
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