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Introduction to Database System

Introduction to Database System
Data security threats include

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

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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
In SQL, which command is used to add a column/integrity constraint to a table

ALTER TABLE
ADD COLUMN
MODIFY TABLE
INSERT COLUMN

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Introduction to Database System
A recursive relationship is a relationship between an archetype and an instance of that archetype.

True
False

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Introduction to Database System
It is more accurate to define a _____ as a variety of different record types that are treated as a single unit

Flat File
Table
Database
None of these
Record

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Introduction to Database System
Database applications are seldom intended for use by a single user.

False
True

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