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Introduction to Database System

Introduction to Database System
A scheme describes

All of these
data elements
record relationships
records and files
None of these

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

all of the listed here
MODIFY TABLE
ALTER TABLE
DEFINE TABLE

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Introduction to Database System
A tuple is a(n):

row of a table.
key of a table.
two dimensional table.
column of a table.

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Introduction to Database System
If the record management system allows you to edit values before they are recorded on disk, you can

All of the listed here
change the width of a field
change the name of a field
correct spelling changes before they are recorded

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Introduction to Database System
Sophisticated report generators can

print row-oriented reports
All of the listed here
selectively retrieve and print portions of a list
perform arithmetic operations

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Introduction to Database System
The XML family of standards is very important in database processing today.

True
False

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