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Databases - Relational model

Avatto > > GATE COMPUTER SCIENCE > > Practice Questions > > Computer Science And Information Technology > > Databases > > Relational model

6. A report generator is used to

A
Update files.
B
Print files on paper
C
Data entry.
D
Delete files.

Answer
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Option : B
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7. The property / properties of a database is / are :

A
It is an integrated collection of logically related records.
B
It consolidates separate files into a common pool of data records.
C
Data stored in a database is independent of the application programs using it.
D
All of the above

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Option : D
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8. A relational database developer refers to a record as

A
A criteria.
B
A relation.
C
A tuple.
D
An attribute.

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Option : C
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9. The relational model feature is that there

A
The relational model feature is that there
B
Is much more data independence than some other database models
C
Are explicit relationships among records
D
Are tables with many dimensions

Answer
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Option : B
Explanation : In relational model data is stored in tables and if we talk about data independence it is one of the major feature of DBMS which holds in all DBMS models.

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10. Conceptual design

A
Is a documentation technique.
B
Needs data volume and processing frequencies to determine the size of the database.
C
Involves modeling independent of the DBMS
D
Is designing the relational model.

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Option : C
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