table structs

 

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Code

 

 

约束的类型有如下几种:
C (check constraint on a table)
P (primary key)
U (unique key)
R (referential integrity)
V (with check option, on a view)
O (with read only, on a view)

posted on 2009-03-13 01:51  dolphin_bobo  阅读(140)  评论(0编辑  收藏  举报

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