题目内容

( ) have the maximum level of privileges and can control other users and their access to the DBMS

A. End users
B. Database administrators
C. Normal user
D. Application programs

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In a database, ( ) is a separate entity from the software that accesses it.

A. hardware
B. software
C. data
D. users

The ( ) is the physical computer system that allows access to data.

A. hardware
B. software
C. data
D. users

A distributed database can be classified either as a [填空1] distributed database or as a [填空2] distributed database. Of the two databases, [填空3] is more secure than the other one.

There are three levels in the DBMS architecture. Among them, [填空1] level is to interact with users directly, [填空2] level is to interact with hardware directly, and query is on [填空3] level.