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Introduction to Database System

Introduction to Database System
The degree of a relationship refers to the number of entity classes in the relationship.

False
True

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Introduction to Database System
Which of the following contains a complete record of all activity that affected the contents of a database during a certain period of time?

report writer
query language
transaction log
None of these
data manipulation language

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Introduction to Database System
Composite identifiers consist of two or more attributes.

True
False

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Introduction to Database System
An on-line commercial site such as Amazon.com is an example of a(n) ________ .

multiuser database application
data mining database application
e-commerce database application
single-user database application

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Introduction to Database System
A scheme describes

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

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Introduction to Database System
In a relational schema, each tuple is divided into fields called

Relations
Queries
Domains
All of the listed here

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