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Introduction to Database System

Introduction to Database System
A subtype entity is a special case of another entity called a supertype entity.

True
False

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

Record
Document
None of these
Fields
File

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Introduction to Database System
The degree of a relationship refers to the number of entity classes in the relationship.

False
True

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Introduction to Database System
The main idea behind computer files is that it is convenient to

create them
arrange them
access them
store information together

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Introduction to Database System
In a relation, the columns are sometimes called "attributes".

True
False

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Introduction to Database System
The _____ command is used to allocates an extent for the table in SQL

MODIFY ALLOCATES
ALTER TABLE
MODIFY TABLE
REDEFINE TABLE
None of these

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