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Introduction to Database System

Introduction to Database System
A _____ Contains fields of data about one entity.

None of these
Fields
Document
Record
File

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Introduction to Database System
The files stored on a secondary stage device are composed of a hierarchy of data. What does a record in a file contain?

Bits
None of the listed here
Characters
Data field

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Introduction to Database System
Which command is used to remove an index from the database in SQL?

DELETE INDEX
DROP INDEX
ROLL BACK INDEX
REMOVE INDEX

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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.

Delete
Update
None of these
Index
Sort Key

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Introduction to Database System
Which of the following refers to an entity in which the identifier of one entity includes the identifier of another entity?

ID-dependent entity
Strong entity
Weak entity
ID-independent entity

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Introduction to Database System
An-owner-member set in the CODASYL specifications may have

more than one member but only one occurrence per member
only one member but many member occurrence
All of the listed here
only one owner but many owner occurrences

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