Which of the following database concepts deals with grouping a set of SQL statements into a single logical unit of execution? MCQ with Answer and Explanation

Question
Which of the following database concepts deals with grouping a set of SQL statements into a single logical unit of execution?
A. Indexing
B. Normalization
C. View definition
D. Transaction
Answer: Option D
Solution (By JKSSB Mock Tests)
A Transaction is a sequence of one or more SQL operations treated as a single, indivisible unit of work that must either succeed completely or fail completely.
This question belongs to: Computer Database Management System (DBMS)
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Practice More Database Management System (DBMS) Questions

Question #1
Which of the following is a true statement about indexes?
A. Indexes are only used for primary keys
B. Indexes improve the speed of SELECT queries but can slow down INSERT, UPDATE, and DELETE operations
C. Indexes cannot be created on views
D. Indexes always improve performance
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Correct Answer: Option B

Explanation:
Indexes speed up data retrieval but require additional maintenance during data modifications, which can slow down DML operations.
This question belongs to: Computer Database Management System (DBMS)
Question #2
In the relational model, what is the term used to describe the header or definition of a table specifying its name and attributes?
A. Relation Card
B. Relation Domain
C. Relation Schema
D. Relation Instance
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Correct Answer: Option C

Explanation:
A Relation Schema defines the structure of a relation, specifying its name and the list of attributes along with their data types.
This question belongs to: Computer Database Management System (DBMS)
Question #3
Which of the following is not a type of database model?
A. Object-oriented
B. Hierarchical
C. Network
D. Flat-file
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Correct Answer: Option D

Explanation:
Flat-file is not a database model; it is a simple file containing records. Hierarchical, Network, Relational, and Object-oriented are database models.
This question belongs to: Computer Database Management System (DBMS)
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