What is an alternate key? MCQ with Answer and Explanation
Question
Report Error
Discuss this Question (0)
Practice More Database Management System (DBMS) Questions
Question #1
Report Error
Which of the following is true about a surrogate key?
Correct Answer: Option B
Explanation:
A surrogate key is a system-generated unique identifier, typically numeric, that has no business significance.
A surrogate key is a system-generated unique identifier, typically numeric, that has no business significance.
This question belongs to:
Computer
Database Management System (DBMS)
Question #2
Report Error
What is a data dictionary in a DBMS?
Correct Answer: Option C
Explanation:
The data dictionary stores metadata such as table definitions, column types, constraints, and other database objects.
The data dictionary stores metadata such as table definitions, column types, constraints, and other database objects.
This question belongs to:
Computer
Database Management System (DBMS)
Question #3
Report Error
An attribute whose value is computed dynamically from another attribute (such as calculating Age from Date_of_Birth) is called a what?
Correct Answer: Option A
Explanation:
A Derived Attribute is an attribute whose values are not stored physically in the database but are calculated at runtime from other stored attributes.
A Derived Attribute is an attribute whose values are not stored physically in the database but are calculated at runtime from other stored attributes.
This question belongs to:
Computer
Database Management System (DBMS)
No comments yet. Be the first to start the discussion!