题目内容

A ________ represents the smallest unit of data a computer can process.

A. bit
B. byte
C. field
D. file

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A is a group of eight .

A. bit; bytes
B. byte; bits
C. field; files
D. file; fields

Microsoft ________ is a popular example of a relational database.

Access
B. Excel
C. PowerPoint
D. Word

The relational database model is based on the concept of ________-dimensional tables.

A. one
B. two
C. three
D. four

The ________ creates links between two tables.

A. alien
B. foreign
C. primary
D. secondary