SQL语言中,级联删除的短语是

admin2010-10-27  22

问题 SQL语言中,级联删除的短语是

选项 A、WHEN DELETE RESTRICT
B、ON DELETE RESTRICT
C、ON DELETE SET NULL
D、ON DELETE CASCADE

答案D

解析 SQL语言中,级联删除的短语是ON DELETE CASCADE。选项B是受限删除,选项 C是置空值删除。
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