Question

Explain tuple relational calculus in dbms tutorial point

Answer 1

A tuple variable is a variable that 'ranges over' a named relation: i.e., a variable whose only permitted values are tuples of the relation. - It implies that it selects the tuples from the TEACHER in such a way that the resulting teacher tuples will have the salary greater than 20000.

I hope this will help you

If helpful then please select my answer as brainliest answer

And also follow me ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️