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[数据库] sqlsever2008 实验二指导书及答案
说明: (3) alter table teacher add teasex char(2) null constraint teasex_ck check(teasex in('男' ,'女')) (4) alter table cla_tea add constraint claid_fk foriegn key(claid) references class(claid) alter table cla_tea add constraint teaid_fk foriegn key(teaid)<lek2427> 上传 | 大小:83kb