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Introduction to Database System

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

relationship.
identifier.
attribute.
entity.

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Introduction to Database System
In SQL, which command is used to create a database user?

All of the listed here
CREATE USER
MK USER
ADD USER TO DATABASE

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Introduction to Database System
A database has data and relationships.

False
True

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Introduction to Database System
A compound key

both (a) and (b)
None of these
is a combination of each unique key
uniquely identifies an item in a list
is made up a several pieces of information

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

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

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Introduction to Database System
What is the language used by most of the DBMSs for helping their users to access data?

4GL
SQL
Query language
High level language

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