考试
2021-02-25 12:22:44

(多选题)Which three statements co

题目描述

AConstraints provide data independence.

BConstraints make complex queries easy.

CConstraints enforce rules at the view level.

DConstraints enforce rules at the table level.

EConstraints prevent the deletion of a table if there are dependencies.

FConstraints prevent the deletion of an index if there are dependencies.

答案解析

[db:答案解析]

C,D,E

加载中...
AI正在思考中,请稍候...