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Introduction to Database System

Introduction to Database System
A key is a group of one or more attributes that uniquely identifies a row.

False
True

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Introduction to Database System
Composite identifiers consist of two or more attributes.

True
False

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Introduction to Database System
The data-base environment has all of the following components except:

data-base administrator
users
None of these
separate files
data base

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Introduction to Database System
A ternary relationship is so called because in contains two entities and one association between them.

True
False

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Introduction to Database System
Versatile report generators can provide

All of these
None of these
Subtotals
Columnar totals
Calculations

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

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

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