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INTRODUCTION TO DATABASE SYSTEM

Introduction to Database System
Which command is used to remove a table from the database in SQL?

ERASE TABLE
UNATTACH TABLE
DELETE TABLE
DROP TABLE

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Introduction to Database System
A large computer information system maintains many different computer files. Which amongst them is called a perpetual file?

Specialized file
Log file
Update file
Master file

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Introduction to Database System
A file produced by a spreadsheet

can be used for graphic
can be used as it by the DBMS
all of the listed here
is generally stored on disk in an ASCII text format

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Introduction to Database System
A form defines

none of the listed here
the width of each field
both of the listed here
where data is placed on the screen

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Introduction to Database System
Which of the following is true of a network structure?

It allows a many-to-many relationship
It will be the dominant data base of the future
It is a physical representation of the data
It is conceptually simple

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