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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.

Sort Key
Index
None of these
Update
Delete

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Introduction to Database System
A subtype entity is a special case of another entity called a supertype entity.

True
False

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Introduction to Database System
Enterprise Resource Planning (ERP) is an example of a single user database.

True
False

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Introduction to Database System
Batch processing is appropriate if

a large computer system is available
All of these
only a few transactions are involved
only a small computer system is available
None of these

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Introduction to Database System
Which of the following is not a restriction for a table to be a relation?

No two rows in a table may be identical.
All of the entries in any column must be of the same kind.
The cells of the table must contain a single value.
The columns must be ordered.

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Introduction to Database System
The on-line, softcopy display a customer's charge account to respond to an inquiry is an examples of a

on demand report
exception report
forecasting report
regularly scheduled report

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