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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
An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity.

True
False

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Introduction to Database System
The way a particular application views the data from the data base that the application uses is a :

relational model
subschema
schema
None of these
module

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Introduction to Database System
The main idea behind computer files is that it is convenient to

arrange them
access them
store information together
create them

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Introduction to Database System
The data dictionary tells the DBMS

what attribute are possessed by the data
what files are in the database
All of the listed here
what these files contain

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Introduction to Database System
The model for a _____ resembles the hierarchical model in many respects.

Network database
Hierarchical database
None of these
Distributed database
Relational database

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