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Welcome to the Relational Databases MCQs Page

Dive deep into the fascinating world of Relational Databases with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Relational Databases, a crucial aspect of DBMS. In this section, you will encounter a diverse range of MCQs that cover various aspects of Relational Databases, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within DBMS.

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Check out the MCQs below to embark on an enriching journey through Relational Databases. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of DBMS.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Relational Databases. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Relational Databases MCQs | Page 7 of 12

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Q61.
Which of the following are integrity controls that a DBMS may support?

a.

Assume a default value in a field unless a user enters a value for that field.

b.

Limit the set of permissible values that a field may assume.

c.

Limit the use of null values in some fields.

d.

All of the above.

Discuss
Answer: (d).All of the above.
Q62.
A secondary key is which of the following?

a.

Nonunique key

b.

Primary key

c.

Useful for denormalization decisions

d.

Determines the tablespace required

Discuss
Answer: (a).Nonunique key
Q63.
The fastest read/write time and most efficient data storage of any disk array type is:

a.

RAID-0.

b.

RAID-1.

c.

RAID-2.

d.

RAID-3.

Discuss
Answer: (a).RAID-0.
Q64.
Which of the following improves a query's processing time?

a.

Write complex queries.

b.

Combine a table with itself.

c.

Query one query within another.

d.

Use compatible data types.

Discuss
Answer: (d).Use compatible data types.
Q65.
The blocking factor is:

a.

a group of fields stored in adjacent memory.

b.

the number of physical records per page.

c.

attributes grouped together by the same primary key.

d.

attributes grouped together by the same secondary key.

Discuss
Answer: (b).the number of physical records per page.
Q66.
Which of the following is not a relational database?

a.

dBASE IV

b.

4th Dimension

c.

FoxPro

d.

Reflex

Discuss
Answer: (d).Reflex
Q67.
A list consists of last names, first names, addresses, and pin codes if all people in the list have the same last and the same pin code, a useful key would be

a.

the pin code

b.

the last name

c.

a compound key consisting of the first name and the last name

d.

All of the above

Discuss
Answer: (c).a compound key consisting of the first name and the last name
Q68.
A number of related records that are treated as a unit is called

a.

file

b.

field

c.

data

d.

batch

Discuss
Answer: (a).file
Q69.
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

Discuss
Answer: (c).Sort Key
Q70.
Which of the following is not characteristic of a relational database model?

a.

tables

b.

treelike structure

c.

complex logical relationships

d.

records

Discuss
Answer: (b).treelike structure
Page 7 of 12

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