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Introduction to Database System

Introduction to Database System
The main idea behind computer files is that it is convenient to

access them
create them
store information together
arrange them

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

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

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Introduction to Database System
Which command(s) is(are) used to redefine a column of the table in SQL ?

DEFINE TABLE
MODIFY TABLE
ALTER TABLE
all of the listed here

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

True
False

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Introduction to Database System
Embedded pointer provide

an inverted index
a physical record key
a secondary access path
None of these
All of these

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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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