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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 2 of 21

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Q11.
SQL view is said to be updatable (that is, inserts, updates or deletes can be applied on the view) if which of the following conditions are satisfied by the query defining the view?

a.

The from clause has only one database relation.

b.

The query does not have a group by or having clause.

c.

The select clause contains only attribute names of the relation, and does not have any expressions, aggregates, or distinct specification.

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q12.
Which of the following is used at the end of the view to reject the tuples which do not satisfy the condition in where clause ?

a.

With

b.

Check

c.

With check

d.

All of the mentioned

Discuss
Answer: (c).With check
Q13.
A relational database system needs to maintain data about the relations, such as the schema of the relations. This is called

a.

Metadata

b.

Catalog

c.

Log

d.

Dictionary

Discuss
Answer: (a).Metadata
Q14.
Relational schema and other metadata about relations are stored in a structure called the ____________ .

a.

Metadata

b.

Catalog

c.

Log

d.

Data Dictionary

Discuss
Answer: (d).Data Dictionary
Q15.
___________ is the collection of memory structures and Oracle background processes that operates against an Oracle database.

a.

Database

b.

Instance

c.

Tablespace

d.

Segment

Discuss
Answer: (b).Instance
Q16.
A ________ is a logical grouping of database objects, usually to facilitate security, performance, or the availability of database objects such as tables and indexes.

a.

Tablespace

b.

Segments

c.

Extents

d.

Blocks

Discuss
Answer: (a).Tablespace
Q17.
A tablespace is further broken down into ________

a.

Tablespace

b.

Segments

c.

Extents

d.

Blocks

Discuss
Answer: (b).Segments
Q18.
__________ is a contiguous group of blocks allocated for use as part of a table, index, and so forth.

a.

Tablespace

b.

Segment

c.

Extent

d.

Block

Discuss
Answer: (c).Extent
Q19.
________ is the smallest unit of allocation in an Oracle database.

a.

Database

b.

Instance

c.

Tablespace

d.

Database Block

Discuss
Answer: (d).Database Block
Q20.
DML is provided for

a.

Description of logical structure of database

b.

Addition of new structures in the database system

c.

Manipulation & processing of database

d.

Definition of physical structure of database system

Discuss
Answer: (c).Manipulation & processing of database
Page 2 of 21

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