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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.

True
False

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Introduction to Database System
The purpose of a database is to help people stop using spreadsheets.

True
False

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Introduction to Database System
Characteristic(s) of a distributed MIS structure is

computers supporting local DP operations
a multiprocessing environment
interactive sharing of the workload
All of these
None of these

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

dBase-II
DB2
R:base
IDMS

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Introduction to Database System
Which type of entity represents an actual occurrence of an associated generalized entity?

Subtype entity
Supertype entity
Archetype entity
Instance entity

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Introduction to Database System
An entity class is a collection of entities and is described by the structure of the entities in that class.

True
False

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