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Introduction to Database System

Introduction to Database System
Which of the following is NOT a basic element of all versions of the E-R model?

Entities
Primary keys
Relationships
Attributes

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Introduction to Database System
The different classes of relations created by the technique for preventing modification anomalies are called:

None of these
functional dependencies.
referential integrity constraints.
normal forms.

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

True
False

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Introduction to Database System
Large collections of files are called

records
fields
file system
databases
None of these

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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
The following are functions of a DBMS except ________ .

creating databases
processing data
administrating databases
creating and processing forms

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