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Introduction to Database System

Introduction to Database System
Given the functional dependency R → (S,T) , then it is also true that R → S.

False
True

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Introduction to Database System
A relation is a two-dimensional table.

True
False

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Introduction to Database System
Entities can be associated with one another in which of the following?

Entities
Relationships
Attributes
Identifiers

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Introduction to Database System
Which of the following products was an early implementation of the relational model developed by E.F. Codd of IBM?

DB2
IDMS
dBase-II
R:base

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Introduction to Database System
Related fields in a data base are grouped to form

data file
menu
bank
data record
None of these

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Introduction to Database System
Which two files are used during operation of the DBMS?

None of the listed here
data dictionary and query language
data dictionary and transaction log
query language and utilities

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