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Welcome to the Data Storage and Querying MCQs Page

Dive deep into the fascinating world of Data Storage and Querying with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Data Storage and Querying, a crucial aspect of DBMS. In this section, you will encounter a diverse range of MCQs that cover various aspects of Data Storage and Querying, 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 Data Storage and Querying. 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 Data Storage and Querying. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Data Storage and Querying MCQs | Page 17 of 21

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Q161.
Which product is returned in a join query have no join condition:

a.

Equijoins

b.

Cartesian

c.

Both Equijoins and Cartesian

d.

None of the mentioned

Discuss
Answer: (b).Cartesian
Q162.
Which is a join condition contains an equality operator:

a.

Equijoins

b.

Cartesian

c.

Both Equijoins and Cartesian

d.

None of the mentioned

Discuss
Answer: (a).Equijoins
Q163.
Which join refers to join records from the write table that have no matching key in the left table are include in the result set:

a.

Left outer join

b.

Right outer join

c.

Full outer join

d.

Half outer join

Discuss
Answer: (b).Right outer join
Q164.
Which operation are allowed in a join view:

a.

UPDATE

b.

INSERT

c.

DELETE

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q165.
Which view that contains more than one table in the top-level FROM clause of the SELECT statement:

a.

Join view

b.

Datable join view

c.

Updatable join view

d.

All of the mentioned

Discuss
Answer: (c).Updatable join view
Q166.
Pictorial representation of an expression is called

a.

Expression tree

b.

Operator tree

c.

Expression flow

d.

Expression chart

Discuss
Answer: (b).Operator tree
Q167.
The results of each intermediate operation are created and then are used for evaluation of the next-level operations. This is called

a.

Materialized evaluation

b.

Expression evaluation

c.

Tree evaluation

d.

Tree materialization

Discuss
Answer: (a).Materialized evaluation
Q168.
______________ allows the algorithm to execute more quickly by performing CPU activity in parallel with I/O activity.

a.

Buffering

b.

Double buffering

c.

Multiple buffering

d.

Double reading

Discuss
Answer: (a).Buffering
Q169.
Pipelines can be executed in

a.

4

b.

3

c.

2

d.

5

Discuss
Answer: (c).2
Q170.
In a _________ the system makes repeated requests for tuples from the operation at the top of the pipeline.

a.

Demand-driven pipeline

b.

Producer-driven pipeline

c.

Demand pipeline

d.

All of the mentioned

Discuss
Answer: (a).Demand-driven pipeline
Page 17 of 21

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