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Introduction to Database System

Introduction to Database System
In SQL, which command is used to create a database user?

CREATE USER
MK USER
ADD USER TO DATABASE
All of the listed here

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Introduction to Database System
The language used in application programs to request data from the DBMS is referred to as the

DDL
DML
query language
All of the listed here

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Introduction to Database System
An indexing operation

sorts a file using a single key
None of the listed here
sorts file using two keys
establishes an index for a file

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Introduction to Database System
A compound key

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

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Introduction to Database System
Relationship classes are associations between entity classes.

False
True

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Introduction to Database System
A functional dependency is always an equation.

True
False

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