Database Systems Questions and Answers

Exercise

Exercise 1
Exercise 2
Exercise 3
Exercise 4

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Q 1
A form defines

A) where data is placed on the screen

B) the width of each field

C) both (a) and (b)

D) All of the above


Correct Option - C

Explanation


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Q 2
Data security threats include

A)   hardware failure

B)   privacy invasion

C)   fraudulent manipulation of data

D)   All of the above


Correct Option - B

Explanation


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Q 3
If you want to group the records in the abc database, you could use the Jobcode as the _____.

A)   Delete

B)   Update

C)   Sort Key

D)   Index


Correct Option - C

Explanation


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Q 4
Which command is used to remove a table from the database in SQL?

A)   DELETE TABLE

B)   DROP TABLE

C)   ERASE TABLE

D)   UNATTACH TABLE


Correct Option - B

Explanation


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Q 5
Which of the following is true of a network structure?

A) It is a physical representation of the data

B) It allows a many-to-many relationship

C) It is conceptually simple

D) It will be the dominant data base of the future


Correct Option - B

Explanation


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Q 6
When you have finished entering information into a form

A) the template is written to the data file

B) the contents of the form are written to the data file

C) the contents of the form can be printed

D) All of the above


Correct Option - B

Explanation


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Q 7
The logical data structure with a one-to-many relationship is a :

A)   network

B)   tree

C)   chain

D)   relational


Correct Option - B

Explanation


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