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1.Ö÷¼üÔ¼Êø£ºalter table ±íÃû add constraint pk_Ô¼ÊøÃû primary key(Ö÷¼üÔ¼Êø×Ö¶ÎÃû)
2.Íâ¼ü£ºalter table±íÃûadd constraint fk_Ô¼ÊøÃûforeign key(Íâ¼ü×Ö¶ÎÃû) references ¹ØÏµ±í(Ö÷¼üÃû)
3.Î¨Ò»Ô¼Êø£ºalter table ±íÃû add constraint uq_Ô¼ÊøÃû unique (Î¨Ò»Ô¼Êø×Ö¶ÎÃû)
4.¼ì²éÔ¼Êø£ºalter table ±íÃû add constraint ck_Ô¼ÊøÃû check (Ô¼Êø¼ì²é×Ö¶ÎÃû) --±í´ïʽ
5.ĬÈÏÔ¼Êø£ºalter table ±íÃû add constraint df_Ô¼ÊøÃû default (ĬÈÏÖµ) for ĬÈÏÔ¼Êø×Ö¶ÎÃû
ɾ³ýÔ¼ÊøÓï·¨£ºalter table ±íÃû drop constraint Ô¼ÊøÃû
ÀýÈ磺ɾ³ýstuInfo±íÖеØÖ·µÄĬÈÏÔ¼Êø£ºalter table stuInfo drop constraint Ô¼ÊøÃû(df_stuAddress)
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exec sp_grantdbaccess 'zhang','zhangUser' --'zhangΪµÇ¼ÕË»§','zhangUserΪÊý¾Ý¿âÓû§'
µÚÈýµÀ´óÃÅ——ÏòÊý¾Ý¿âÓû§ÊÚȨ£ºgrant ȨÏÞ on ±íÃû to Êý¾Ý¿âÓû§
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grant select,update,delete,insert on stuInfo to zhangsanUser
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