9、关于DDL,下列说法正确的是__________。A.DDL是数据库定义语言B.DDL是数据库操纵语言C.DDL是数据库控制语言D.DDL是数据库维护语言
9、关于DDL,下列说法正确的是__________。
A.DDL是数据库定义语言
B.DDL是数据库操纵语言
C.DDL是数据库控制语言
D.DDL是数据库维护语言
参考答案和解析
A
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