What is a database schema? MCQ with Answer and Explanation

Question
What is a database schema?
A. A backup file
B. A single table
C. The overall design or structure of the database, including tables, columns, and relationships
D. A query result
Answer: Option C
Solution (By JKSSB Mock Tests)
A schema is the logical description of the entire database, defining tables, views, indexes, and constraints.
This question belongs to: Computer Database Management System (DBMS)
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Practice More Database Management System (DBMS) Questions

Question #1
What is the alternative mathematical term used for a 'Table' in a relational database model?
A. Relation
B. Domain
C. Tuple
D. Attribute
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Correct Answer: Option A

Explanation:
In relational model terminology introduced by E.F. Codd, a table is formally referred to as a relation.
This question belongs to: Computer Database Management System (DBMS)
Question #2
Which language is used to define the structure of a database, such as creating tables and constraints?
A. DCL
B. TCL
C. DDL
D. DML
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Correct Answer: Option C

Explanation:
Data Definition Language (DDL) is used to define and modify the database schema, including CREATE, ALTER, and DROP statements.
This question belongs to: Computer Database Management System (DBMS)
Question #3
Which of the following is a DML statement?
A. CREATE
B. ALTER
C. UPDATE
D. DROP
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Correct Answer: Option C

Explanation:
UPDATE is a Data Manipulation Language (DML) command used to modify existing records in a table. CREATE, ALTER, DROP are DDL.
This question belongs to: Computer Database Management System (DBMS)
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