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Introduction to Database System

Introduction to Database System
A report generator is used to

all of the listed here
print files on paper
data entry
update files

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Introduction to Database System
A ternary relationship is so called because in contains two entities and one association between them.

False
True

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Introduction to Database System
Which type of entity represents a logical generalization whose actual occurrence is represented by a second, associated entity?

Instance entity
Archetype entity
Subtype entity
Supertype entity

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Introduction to Database System
A relation is in 5NF when multivalued dependencies are isolated in their own relation.

False
True

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Introduction to Database System
A _____ Contains fields of data about one entity.

File
Fields
None of these
Record
Document

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Introduction to Database System
A command that lets you change one or more fields in a record is

Insert
All of these
Look-up
Modify
None of these

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