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Introduction to Database System

Introduction to Database System
What name is given to the collection of facts, items of information or data which are related in some way?

Directory information
Information provider
Information tree
Database

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Introduction to Database System
Which type of entity represents an actual occurrence of an associated generalized entity?

Subtype entity
Archetype entity
Instance entity
Supertype entity

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Introduction to Database System
Which command is used to remove a table from the database in SQL?

ERASE TABLE
DELETE TABLE
UNATTACH TABLE
DROP TABLE

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Introduction to Database System
The _____ command is used to allocates an extent for the table in SQL

MODIFY ALLOCATES
MODIFY TABLE
ALTER TABLE
None of these
REDEFINE TABLE

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Introduction to Database System
A database design may be based on existing data.

False
True

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Introduction to Database System
The only reason for the existence of relations is to store instances of functional dependencies.

False
True

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