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Introduction to Database System

Introduction to Database System
A relation has cells that hold multi-value entries.

True
False

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Introduction to Database System
Data items grouped together for storage purposes are called a

None of these
list
string
record
title

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Introduction to Database System
Which of the following indicates the maximum number of entities that can be involved in a relationship?

Greater Entity Count (GEC)
ERD
Maximum cardinality
Minimum cardinality

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Introduction to Database System
A primary key is a composite key that was selected to be the main identifier for the relation.

True
False

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Introduction to Database System
Which command(s) is(are) used to redefine a column of the table in SQL ?

MODIFY TABLE
all of the listed here
ALTER TABLE
DEFINE TABLE

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Introduction to Database System
Entities use identifiers while tables use keys.

False
True

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