Answer-In a relational database, what is a foreign key?

Question

In a relational database, what is a foreign key?

A A key that uniquely identifies a row in its own table Correct Incorrect

B A key that references a primary key in another table Correct Incorrect

C A key used for sorting Correct Incorrect

D A key used for indexing only Correct Incorrect

E A key storing encrypted values Correct Incorrect

Foreign keys maintain relationships between tables and enforce referential integrity.

Which of the following is NOT a common type of error encountered during software development?
Which of the following is true about ACID properties in DBMS?
What is the purpose of 'indexing' in a database?
An SQL `VIEW` is a:
What is context switching?
A column or set of columns that uniquely identifies each row in a table is called a:
In an E-R Diagram, entities are typically represented by:
Distributed 2-Phase Commit (2PC) can suffer from:
Which of the following is a non-relational database?
Which interrupt is generated by software?

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