SQL语言中，级联删除的短语是（ ）。
A．WHEN DELETE RESTRICT
B．ON DELETE RESTRICT
C．0N DELETE SET NULL
D．0N DELETE CASCADE
SQL语言中，级联删除的短语是（ ）。
A．WHEN DELETE RESTRICT
B．ON DELETE RESTRICT
C．0N DELETE SET NULL
D．0N DELETE CASCADE
DSQL语言中，级联删除的短语是ON DELETE CASCADE。
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