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Introduction to Database System

Introduction to Database System
An entity is something that can be identified in the user's work environment; something that the users want to track.

False
True

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Introduction to Database System
Database applications are seldom intended for use by a single user.

True
False

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Introduction to Database System
In SQL, which command is used to select only one copy of each set of duplicable rows

SELECT DISTINCT
SELECT UNIQUE
SELECT DIFFERENT
None of these
All of these

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Introduction to Database System
A report generator is used to

all of the listed here
print files on paper
data entry
update files

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Introduction to Database System
In which of the following can many entity instances of one type be related to many entity instances of another type?

One-to-Many Relationship
One-to-One Relationship
Composite Relationship
Many-to-Many Relationship

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Introduction to Database System
The on-line, softcopy display a customer's charge account to respond to an inquiry is an examples of a

on demand report
forecasting report
exception report
regularly scheduled report

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