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Introduction to Database System

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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Introduction to Database System
Which of the following indicates the minimum number of entities that must be involved in a relationship?

Minimum cardinality
ERD
Maximum cardinality
Greater Entity Count (GEC)

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Introduction to Database System
A computer file contains several records. What does each record contain?

Words
Bytes
Fields
Database

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

True
False

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Introduction to Database System
The physical location of a record is determined by a mathematical formula that transforms a file key into a record location in

a sequential file
a hashed file
None of these
a tree file
an indexed file

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Introduction to Database System
A form defines

none of the listed here
the width of each field
both of the listed here
where data is placed on the screen

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