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[主观题]
SQL语言中,能正确实现级联删除的命令是A.ON DELETE CASCADESB.ON DELETE RESTRICTEDC.ON DELETE
SQL语言中,能正确实现级联删除的命令是
A.ON DELETE CASCADES
B.ON DELETE RESTRICTED
C.ON DELETE NULLIFIES
D.ON DELETE DEFAULT
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)
SQL语言中,能正确实现级联删除的命令是
A.ON DELETE CASCADES
B.ON DELETE RESTRICTED
C.ON DELETE NULLIFIES
D.ON DELETE DEFAULT
第4题
心血虚、心阴虚、心气虚、中医医师心阳虚的共有症是
A.失眠
B.失眠
C.健忘
D.多梦
E.心悸
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