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Introduction to Database System

Introduction to Database System
Given the functional dependency R → (S,T) , then it is also true that R → S.

False
True

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Introduction to Database System
Periodically adding, changing and deleting file records is called file

restructuring
upgrading
renewing
Updating

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Introduction to Database System
Each of data files has a _____ that describe the way the data is stored in the file.

Fields
File structure
Records
Database

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Introduction to Database System
In SQL, which command is used to create a database user?

ADD USER TO DATABASE
All of the listed here
CREATE USER
MK USER

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Introduction to Database System
A functional dependency is always an equation.

True
False

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Introduction to Database System
The data-base environment has all of the following components except:

separate files
data base
None of these
users
data-base administrator

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