题目内容

SQL's commands make it easy for you to design and manage the informaton in your database.

A. long
B. short
C. simple
D. complicated

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The most commonly used SQL commands are classified as language commands.

A. DML, DCL and LCD
B. DDL, LCD and DCL
C. DDL, DML and LCD
DDL, DML and DCL

Thecommand is the most commonly used command in SQL.

A. INSERT
B. SELECT
C. WHERE
D. CREATE

You can use command to instert, upadate, delete, and retrieve information from the tables in a database.

A. DDL
B. DML
C. DCL
D. SELECT

以下不属于配送成本控制策略的是（）。

A. 混合策略
B. 差异化策略
C. 合并策略
D. 系统化策略