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Introduction to Database System

Introduction to Database System
The _____ command is used to allocates an extent for the table in SQL

ALTER TABLE
MODIFY ALLOCATES
MODIFY TABLE
REDEFINE TABLE
None of these

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Introduction to Database System
In the relational model, relationships between relations or tables are created by using:

composite keys.
candidate keys.
determinants.
foreign keys.

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

MODIFY TABLE
ALTER TABLE
all of the listed here
DEFINE TABLE

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Introduction to Database System
In SQL, the CREATE VIEW command is used

to create a trigger
to recompile view
to recompile a table
to define a view of one or more tables or views

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Introduction to Database System
Updating a database means

reorganizing the database
all of the listed here
revising the file structure
modifying or adding record occurrences

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Introduction to Database System
Each of data files has a _____ that describe the way the data is stored in the file.

Fields
File structure
Records
Database

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