Question

Statement 1: A tuple is a row in a relation

Statement 2: Existence of multiple foreign keys in a same relation is possible

(a) Both the statements are true

(b) Statement 1 is correct but Statement 2 is false

(c) Statement 1 is false but Statement 2 is correct

(d) Both the statements are false

I have been asked this question during an interview.

This question is from Introduction to the Relational Model topic in section Introduction to Relational Model and Sql of RDBMS

Answer 1

The correct answer is (a) Both the statements are true

To elaborate: A tuple is a row is a relation. There can exist multiple foreign keys in the same relation because there can exist multiple attributes in the relation that are primary keys in two or more other relations.