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Introduction to Database System

Introduction to Database System
The XML family of standards is very important in database processing today.

False
True

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Introduction to Database System
Keys made up of two or more attributes are called composite keys.

False
True

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Introduction to Database System
An indexing operation

sorts a file using a single key
sorts file using two keys
None of the listed here
establishes an index for a file

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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?

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

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Introduction to Database System
An attribute describes the entity's characteristics.

True
False

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Introduction to Database System
The modify operation is likely to be done after

Insert
None of these
Look-up
Delete
All of these

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