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Introduction to Database System

Introduction to Database System
If you want to organize a file in multiple ways, it is better to _____ the data rather than to sort it.

None of these
Update
Delete
Sort Key
Index

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Introduction to Database System
Data encryption techniques are particularly useful for

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

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Introduction to Database System
A recursive relationship is a relationship between an archetype and an instance of that archetype.

False
True

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

False
True

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Introduction to Database System
A scheme describes

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

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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
Information provider
Directory information
Database

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