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Introduction to Database System

Introduction to Database System
An identifier typically uses more than one attribute.

True
False

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Introduction to Database System
In SQL, which command is used to select data in rows and column from one or more tables?

None of these
SELECT
LIST
CHOOSE
BROWSE

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Introduction to Database System
A file produced by a spreadsheet

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

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Introduction to Database System
The files stored on a secondary stage device are composed of a hierarchy of data. What does a record in a file contain?

Characters
Bits
None of the listed here
Data field

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Introduction to Database System
A top-to-bottom relationship among the items in a database is established by a

Hierarchical schema
Network schema
Relational schema
All of the listed here

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Introduction to Database System
Sort/report generators

none of the listed here
require more disk space than index/report generators
are faster than index/report generators
do not need to sort before generating a report

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