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Introduction to Database System

Introduction to Database System
In a relation, the rows are sometimes called "fields".

True
False

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Introduction to Database System
Data encryption techniques are particularly useful for

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

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Introduction to Database System
When using a database management system, the first thing that you must do is to

keep a floppy disk in readiness
activate file editor
create a database file
load the software into your micro¬computer

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Introduction to Database System
The only reason for the existence of relations is to store instances of functional dependencies.

True
False

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Introduction to Database System
In an enterprise-class database system, business users interact directly with database applications, which directly access the database data.

False
True

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

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