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Introduction to Database System

Introduction to Database System
A report generator is used to

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

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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?

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

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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
The physical location of a record is determined by a mathematical formula that transforms a file key into a record location in

a hashed file
a sequential file
a tree file
an indexed file
None of these

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Introduction to Database System
The data dictionary tells the DBMS

All of the listed here
what files are in the database
what attribute are possessed by the data
what these files contain

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

False
True

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