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Introduction to Database System

Introduction to Database System
One approach to standardizing storing of data

None of these
All of these
MIS
CODASYL specifications
structured programming

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Introduction to Database System
Every time attribute A appears, it is matched with the same value of attribute B, but not the same value of attribute C. Therefore, it is true that:

A →
A →
(B,C) →
A → (B,C).

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Introduction to Database System
In SQL, which command is used to select only one copy of each set of duplicable rows

All of these
None of these
SELECT DISTINCT
SELECT UNIQUE
SELECT DIFFERENT

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

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

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Introduction to Database System
Which of the following indicates the maximum number of entities that can be involved in a relationship?

Greater Entity Count (GEC)
Minimum cardinality
Maximum cardinality
ERD

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Introduction to Database System
Which of the following is not a restriction for a table to be a relation?

No two rows in a table may be identical.
All of the entries in any column must be of the same kind.
The cells of the table must contain a single value.
The columns must be ordered.

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