外键关系(Foreign Key relationships)讨论的是父表与子表的关系，通过引入外键(Foreign Key)这个概念来保证参照完整性(Referential integrity)，将使会数据库变的非常...
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It works at a basic level with MySQL, but it won't pick up foreign key relationships.
它基本上能用于MySQL，但不能提取外键关系。
This will not affect the referential integrity or primary-foreign key relationships between the tables in the membership database.
这不会影响到成员数据库中表格之间的主-外键关系。
Constraints such as primary key - foreign key relationships and uniqueness of values are not possible on particular values of an XML document.
不能对XML文档的特定值执行限制，比如主键—外键关系和值的唯一性。
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