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Introduction to Database System

Introduction to Database System
Composite identifiers consist of two or more attributes.

False
True

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Introduction to Database System
In a relation, the rows are sometimes called "fields".

False
True

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Introduction to Database System
A relation is in Boyce-Codd Normal Form (BCNF) if every determinant is a composite key.

True
False

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Introduction to Database System
A form defines

none of the listed here
the width of each field
both of the listed here
where data is placed on the screen

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Introduction to Database System
Which of the following products implemented the CODASYL DBTG model?

IDMS
dBase-II
DB2
R:base

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Introduction to Database System
The data dictionary tells the DBMS

what files are in the database
what attribute are possessed by the data
what these files contain
All of the listed here

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