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Introduction to Database System

Introduction to Database System
Data security threats include

hardware failure
all of the listed here
privacy invasion
fraudulent manipulation of data

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Introduction to Database System
If a calculation is embedded in a form

all of the listed here
the calculations are stored with the form
the result of the calculations are printed in report
the result of the calculations are stored with the form

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Introduction to Database System
In the relational model, relationships between relations or tables are created by using:

determinants.
candidate keys.
foreign keys.
composite keys.

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Introduction to Database System
When using a database management system, the first thing that you must do is to

create a database file
load the software into your micro¬computer
keep a floppy disk in readiness
activate file editor

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Introduction to Database System
Which of the following is not a relational database?

4th Dimension
FoxPro
Reflex
dBASE IV

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Introduction to Database System
An entity class is a collection of entities and is described by the structure of the entities in that class.

True
False

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