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Introduction to Database System

Introduction to Database System
Data security threats include

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

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Introduction to Database System
A relation is considered a:

two-dimensional table.
three-dimensional table.
one-dimensional table.
Column.

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Introduction to Database System
A file that is organized in uniform format is formally referred to as a _____ or a database file.

Record
Document
Structured data file
Database
None of these

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Introduction to Database System
An identifier typically uses more than one attribute.

True
False

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Introduction to Database System
A compound key

is made up a several pieces of information
is a combination of each unique key
both (a) and (b)
uniquely identifies an item in a list
None of these

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Introduction to Database System
Which command is used to remove an index from the database in SQL?

DROP INDEX
REMOVE INDEX
ROLL BACK INDEX
DELETE INDEX

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