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Introduction to Database System

Introduction to Database System
In a relation, the columns are sometimes called "attributes".

False
True

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Introduction to Database System
Relations are categorized into normal forms according to the referential integrity constraints that they have.

False
True

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

Information tree
Database
Directory information
Information provider

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Introduction to Database System
Given the functional dependency R → S , R is called the determinant.

True
False

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Introduction to Database System
A scheme describes

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

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Introduction to Database System
Data encryption techniques are particularly useful for

reducing storage space requirements
improving data integrity
None of these
protecting data in data communication systems
All of these

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