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Introduction to Database System

Introduction to Database System
Any table that meets the definition of a relation is said to be in first normal form.

True
False

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Introduction to Database System
Properties that describe the characteristics of entities are called:

relationships.
entities.
identifiers.
attributes.

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Introduction to Database System
If attribute A determines both attributes B and C, then it is also true that:

(B,C) →
B →
A →
C →

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Introduction to Database System
Which of the following products implemented the CODASYL DBTG model?

R:base
DB2
IDMS
dBase-II

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Introduction to Database System
A large computer information system maintains many different computer files. Which amongst them is called a perpetual file?

Log file
Update file
Master file
Specialized file

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Introduction to Database System
An attribute is a(n):

column of a table.
row of a table.
two dimensional table.
key of a table.

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