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Introduction to Database System

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

DEFINE TABLE
ALTER TABLE
MODIFY TABLE
all of the listed here

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Introduction to Database System
An operation that will increase the length of a list is

Modify
Look-up
Insert
All of the listed here

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Introduction to Database System
A data dictionary is a special file that contains

All of these
the names of all fields in all files
None of these
the data types of all fields in all files
the widths of all fields in all files

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Introduction to Database System
In SQL, which command(s) is(are) used to enable/disable a database trigger?

CHANGE USER
MODIFY USER
All of the listed here
ALTER TRIGGER

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Introduction to Database System
Microsoft Access is an enterprise-class database product.

False
True

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Introduction to Database System
In SQL, the ALTER TABLESPACE command is used

to add/rename data files
to change storage characteristics
to take a tablespace online/offline
All of the listed here

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