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Introduction to Database System

Introduction to Database System
In a relation, the rows are sometimes called "records".

False
True

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

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

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Introduction to Database System
The database administration function includes

None of these
All of these
application programming
database access planning
computer operations management

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Introduction to Database System
The primary key is selected from the:

foreign keys.
candidate keys.
determinants.
composite keys.

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Introduction to Database System
A scheme describes

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

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Introduction to Database System
Updating a database means

reorganizing the database
revising the file structure
modifying or adding record occurrences
all of the listed here

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