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Introduction to Database System

Introduction to Database System
In any hierarchy of data organization, the smallest entity to be processed as a single unit is called

data field
database
data record
data file
None of these

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

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

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Introduction to Database System
A maximum cardinality is the maximum number of entity instances that can participate in a relationship instance.

True
False

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Introduction to Database System
If the record management system allows you to edit values before they are recorded on disk, you can

correct spelling changes before they are recorded
All of the listed here
change the width of a field
change the name of a field

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Introduction to Database System
You have run an SQL statement that asked the DBMS to display data in a table named USER_TABLES. The results include columns of data labeled "TableName," "NumberOfColumns" and "PrimaryKey." You are looking at ________ .

user data
A report
metadata
indexes

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Introduction to Database System
One data dictionary software package is called

None of these
DB/DC dictionary
any of the above
TOTAL
ACCESS

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