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Introduction to Database System

Introduction to Database System
An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity.

False
True

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Introduction to Database System
A file that is organized in uniform format is formally referred to as a _____ or a database file.

Document
Structured data file
None of these
Record
Database

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Introduction to Database System
The logical data structure with a one-to-many relationship is a

network
relational
chain
tree

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

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

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Introduction to Database System
A tuple is a(n):

row of a table.
key of a table.
column of a table.
two dimensional table.

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Introduction to Database System
A scheme describes

records and files
record relationships
All of these
None of these
data elements

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