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Introduction to Database System

Introduction to Database System
Structured Query Language (SQL) is an internationally recognized standard language that is understood by all commercial database management system products.

True
False

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Introduction to Database System
A recursive relationship is a relationship between an archetype and an instance of that archetype.

False
True

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Introduction to Database System
A relation is considered a:

three-dimensional table.
Column.
two-dimensional table.
one-dimensional table.

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Introduction to Database System
Database applications are seldom intended for use by a single user.

False
True

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Introduction to Database System
A list consists of last names, first names, addresses, and pin codes if all people in the list have the same last and the same pin code, a useful key would be

None of these
a compound key consisting of the first name and the last name
the last name
the pin code
All of these

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Introduction to Database System
Periodically adding, changing and deleting file records is called file

restructuring
renewing
upgrading
Updating

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