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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 18 of 21

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Q171.
In a _____________ operations do not wait for requests to produce tuples, but instead generate the tuples eagerly.

a.

Demand-driven pipeline

b.

Producer-driven pipeline

c.

Demand pipeline

d.

All of the mentioned

Discuss
Answer: (b).Producer-driven pipeline
Q172.
Each operation in a demand-driven pipeline can be implemented as an ____ that provides the following functions: open(), next(), and close().

a.

Demand

b.

Pipeline

c.

Iterator

d.

All of the mentioned

Discuss
Answer: (c).Iterator
Q173.
The iterator maintains the __________ of its execution in between calls, so that successive next() requests receive successive result tuples.

a.

State

b.

Transition

c.

Rate

d.

Block

Discuss
Answer: (a).State
Q174.
Tuples are generated ___________ in producer-driven pipelining, they are generated ________ on demand, in demand-driven pipelining.

a.

Lazily, Eagerly

b.

Eagerly, Lazily

c.

Slowly, Eagerly

d.

Eagerly, Slowly

Discuss
Answer: (b).Eagerly, Lazily
Q175.
When two inputs that we desire to pipeline into the join are not already sorted it is the _____________ technique.

a.

Hash join

b.

Buffer join

c.

double-pipelined hash join

d.

double-pipelined join

Discuss
Answer: (d).double-pipelined join
Q176.
Consider the following relational schemes for a library database:Assume {Author, Title} is the key for both schemes. Which of the following statements is true? 
Book (Title, Author, Catalog_no, Publisher, YEAR, Price)
Collection (Title, Author, Catalog_no)
WITH the following functional dependencies:
I. Title Author -> Catalog_no
II. Catalog_no -> Title Author Publisher YEAR
III. Publisher Title YEAR -> Price

a.

Both Book and Collection are in BCNF

b.

Both Book and Collection are in 3NF only

c.

Book is in 2NF and Collection is in 3NF

d.

Both Book and Collection are in 2NF only

Discuss
Answer: (c).Book is in 2NF and Collection is in 3NF
Q177.
Let R(A,B,C,D,E,P,G) be a relational schema in which the following FDs are known to hold:

AB->CD
DE->P
C->E
P->C
B->G

The relation schema R is

a.

in BCNF

b.

in 3NF, but not in BCNF

c.

in 2NF, but not in 3NF

d.

not in 2NF

Discuss
Answer: (d).not in 2NF
Q178.
Which of the following is/are false for RAW mode of FOR XML?

a.

XMLSCHEMA option does not returns an in-line XSD schema

b.

BINARY BASE32 returns the binary data in base32-encoded format

c.

Each row in the query result is transformed into an XML element

d.

None of the mentioned

Discuss
Answer: (b).BINARY BASE32 returns the binary data in base32-encoded format
Q179.
___________ refers to the ability of the system to recover committed transaction updates if either the system or the storage media fails.

a.

Isolation

b.

Atomicity

c.

Consistency

d.

Durability

Discuss
Answer: (d).Durability
Q180.
Which utilities can we used to export data from sql server to a text file?

a.

DTS export wizard

b.

BCP

c.

ISQL

d.

DTS export wizard and BCP

Discuss
Answer: (d).DTS export wizard and BCP
Page 18 of 21

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