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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
An identifier determines the type of relationship that an entity has.

True
False

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Introduction to Database System
An attribute that names or identifies entity instances is a(n):

identifier.
attribute.
entity.
relationship.

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Introduction to Database System
In a relation, the columns are sometimes called "attributes".

False
True

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Introduction to Database System
If you want to organize a file in multiple ways, it is better to _____ the data rather than to sort it.

Index
Delete
None of these
Sort Key
Update

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

False
True

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