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
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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
包装起着保护产品、方便运输、促进销售的作用。一般包装费用占全部流通费用的( )。
A. 10%左右
B. 20%左右
C. 30%左右
D. 50%左右