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Introduction to Database System

Introduction to Database System
Which of the following indicates the minimum number of entities that must be involved in a relationship?

Minimum cardinality
ERD
Greater Entity Count (GEC)
Maximum cardinality

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Introduction to Database System
Data encryption techniques are particularly useful for

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

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Introduction to Database System
What software packages are commonly used for businesses that have to track extensive lists of clients and inventory?

Special purpose packages
Data management packages
Custom made programs
None of these
Single function application packages

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Introduction to Database System
A database has data and relationships.

True
False

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Introduction to Database System
A scheme describes

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

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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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