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Introduction to Database System

Introduction to Database System
In the DBM approach, application programs perform the

access control
storage function
processing functions
all of the listed here

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Introduction to Database System
The data dictionary tells the DBMS

what these files contain
what files are in the database
All of the listed here
what attribute are possessed by the data

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Introduction to Database System
To have a file hold a list, it is necessary to

identify the records in the list
decide which fields will be used as sort or index keys
All of the listed here
identify the name, width and type of the fields of each record.

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Introduction to Database System
An attribute describes the entity's characteristics.

False
True

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Introduction to Database System
In SQL, the CREATE VIEW command is used

to recompile view
to recompile a table
to create a trigger
to define a view of one or more tables or views

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Introduction to Database System
The main idea behind computer files is that it is convenient to

store information together
access them
create them
arrange them

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