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Introduction to Database System

Introduction to Database System
Which of the following is not considered to be a basic element of an enterprise-class database system?

COBOL programs
DBMS
Database applications
Users

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

False
True

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Introduction to Database System
Relationship classes are associations between entity classes.

True
False

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Introduction to Database System
Versatile report generators can provide

All of these
Columnar totals
None of these
Subtotals
Calculations

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Introduction to Database System
The main idea behind computer files is that it is convenient to

access them
store information together
arrange them
create them

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Introduction to Database System
After you _____ a record, many data management the environments require you to issue a command to save the changes you made.

Sort key
Index
Update
Delete

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