题目内容

单选题 A DBMS () a database.

A. defines
B. creates
C. maintains
D. all of the above

查看答案

搜索结果不匹配？点我反馈

更多问题

单选题 Both humans and ()can be considered users of a database.

A. data
B. software
C. application programs
D. hardware

单选题 In a three-level DBMS architecture, the layer that interacts directly with the hardware is the () level.

A. external
B. conceptual
C. internal
D. physical

单选题 In a three-level DBMS architecture, the ()level determines where data are actually stored on the storage device.

A. external
B. conceptual
C. internal
D. physical

单选题 The ()level of a three-level DBMS architecture defines the logical view of the data.

A. external
B. conceptual
C. internal
D. physical