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Introduction to Database System

Introduction to Database System
In SQL, which command(s) is(are) used to enable/disable all triggers on a table?

MODIFY TRIGGERS IN TABLE
ALTER TRIGGERS
ALTER TABLE
All of the listed here

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Introduction to Database System
One approach to standardizing storing of data

CODASYL specifications
MIS
All of these
structured programming
None of these

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Introduction to Database System
A scheme describes

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

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Introduction to Database System
The logical data structure with a one-to-many relationship is a

network
chain
tree
relational

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Introduction to Database System
Given the functional dependency R → S , R is called the determinant.

False
True

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Introduction to Database System
An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity.

True
False

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