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Introduction to Database System

Introduction to Database System
An operation that will increase the length of a list is

Insert
All of the listed here
Modify
Look-up

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Introduction to Database System
An audit trail

is used to make back-up copies
is the recorded history of operations performed on a file
can be used to restore lost information
All of the listed here

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Introduction to Database System
Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier?

Strong entity
Weak entity
ID-dependent entity
ID- independent entity

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Introduction to Database System
Internal auditors should review data system design before they are

All of the listed here
implemented
developed
modified

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Introduction to Database System
Entities use identifiers while tables use keys.

False
True

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Introduction to Database System
If the record management system allows you to edit values before they are recorded on disk, you can

correct spelling changes before they are recorded
change the width of a field
All of the listed here
change the name of a field

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