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Introduction to Database System

Introduction to Database System
Which of the following refers to something that can be identified in the user's work environment, something that the users want to track?

Attribute
Relationship
Entity
Identifier

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Introduction to Database System
A _____ means that one record in a particular record type can be related to many records in another record type and vice-versa.

None of these
One-to-one relationship
One-to-many relationship
Many-to-one relationship
Many-to-many relationship

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Introduction to Database System
The functional dependency R → S means that the value of S can be determined when we are given a value of R.

False
True

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Introduction to Database System
A report generator is used to

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

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

True
False

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Introduction to Database System
A minimum cardinality is the minimum number of entity instances that may participate in a relationship instance.

True
False

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