SQL语言中,能正确实现级联删除的命令是A. ON DELETE CASCADES
题型:单项选择题
问题:
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
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