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Introduction to Database System

Introduction to Database System
Entity instances are associated by relationship classes.

False
True

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Introduction to Database System
The XML family of standards is very important in database processing today.

True
False

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Introduction to Database System
A relation is a two-dimensional table.

False
True

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Introduction to Database System
In a relational schema, each tuple is divided into fields called

Queries
Relations
All of the listed here
Domains

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Introduction to Database System
In any hierarchy of data organization, the smallest entity to be processed as a single unit is called

data field
database
data file
data record
None of these

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Introduction to Database System
Prior to 1970, all data was stored in separate files, which were mostly stored on reels of magnetic tape.

True
False

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