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Introduction to Database System

Introduction to Database System
A large computer information system maintains many different computer files. Which amongst them is called a perpetual file?

Update file
Log file
Specialized file
Master file

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Introduction to Database System
In SQL, which command is used to changes data in a table?

INSERT
UPDATE
APPEND
BROWSE

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Introduction to Database System
Row is synonymous with the term:

field.
column.
relation.
record.

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Introduction to Database System
A maximum cardinality is the maximum number of entity instances that can participate in a relationship instance.

False
True

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Introduction to Database System
In which of the following is a single-entity instance of one type related to many entity instances of another type?

One-to-One Relationship
Composite Relationship
Many-to-Many Relationship
One-to-Many Relationship

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Introduction to Database System
In any hierarchy of data organization, the smallest entity to be processed as a single unit is called

data file
data field
None of these
database
data record

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