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Introduction to Database System

Introduction to Database System
A report generator is used to

data entry
update files
all of the listed here
print files on paper

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Introduction to Database System
Which of the following is not true of the traditional approach to information processing?

It is file-oriented
Programs are dependent on the files
It is inflexible
There is common sharing of data among the various applications
All of these

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Introduction to Database System
Two files may be joined into a third file if

both (b) and (c)
they have a field in common
None of these
they have a row in common
they have no records with the same value in the common field

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Introduction to Database System
If attribute A determines both attributes B and C, then it is also true that:

C →
(B,C) →
A →
B →

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Introduction to Database System
An indexing operation

sorts file using two keys
None of the listed here
establishes an index for a file
sorts a file using a single key

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Introduction to Database System
Which of the following is a group of one or more attributes that uniquely identifies a row?

Tuple
Relation
Key
Determinant

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