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Introduction to Database System

Introduction to Database System
Keys made up of two or more attributes are called composite keys.

False
True

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Introduction to Database System
Which of the following is true of a network structure?

It allows a many-to-many relationship
It is conceptually simple
It will be the dominant data base of the future
It is a physical representation of the data

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

R:base
dBase-II
DB2
IDMS

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Introduction to Database System
If you want to organize a file in multiple ways, it is better to _____ the data rather than to sort it.

Sort Key
Index
Update
None of these
Delete

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Introduction to Database System
A database has data and relationships.

False
True

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Introduction to Database System
A form defines

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

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