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Introduction to Database System

Introduction to Database System
What name is given to the collection of facts, items of information or data which are related in some way?

Directory information
Database
Information provider
Information tree

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Introduction to Database System
A functional dependency is a relationship between or among:

relations.
tables.
attributes.
rows.

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Introduction to Database System
Entities of a given type are grouped into a(n):

database.
attribute.
ER
entity class.

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

True
False

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Introduction to Database System
A key is a group of one or more attributes that uniquely identifies a row.

False
True

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Introduction to Database System
A database design may be based on existing data.

True
False

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