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Introduction to Database System

Introduction to Database System
Which of the following refers to something that can be identified in the user's work environment, something that the users want to track?

Identifier
Attribute
Relationship
Entity

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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
ALTER TABLE
DEFINE TABLE
MODIFY TABLE

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

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

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Introduction to Database System
What name is given to the collection of facts, items of information or data which are related in some way?

Information tree
Directory information
Information provider
Database

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Introduction to Database System
Related fields in a data base are grouped to form

data file
data record
menu
bank
None of these

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Introduction to Database System
Which of the following is a database administrator's function?

All of the listed here
database design
backing up the database
performance monitoring

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