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Introduction to Database System

Introduction to Database System
The files stored on a secondary stage device are composed of a hierarchy of data. What does a record in a file contain?

Bits
Characters
Data field
None of the listed here

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

IDMS
R:base
dBase-II
DB2

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Introduction to Database System
The modify operation is likely to be done after

Look-up
All of these
Delete
Insert
None of these

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Introduction to Database System
Embedded pointer provide

an inverted index
a physical record key
None of these
All of these
a secondary access path

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Introduction to Database System
In a relation, the order of the rows matters.

False
True

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Introduction to Database System
The functional dependency R → S means that the value of S can be determined when we are given a value of R.

True
False

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