Explore topic-wise MCQs in Database.

This section includes 2 Mcqs, each offering curated multiple-choice questions to sharpen your Database knowledge and support exam preparation. Choose a topic below to get started.

1.

Which one of the following deletes all the entries but keeps the structure of the relation.

A. Delete from r where P;
B. Delete from instructor where dept name= ’Finance’;
C. Delete from instructor where salary between 13000 and 15000;
D. Delete from instructor;
Answer» C. Delete from instructor where salary between 13000 and 15000;
Discussion
2.

A Delete command operates on ______ relation.

A. One
B. Two
C. Several
D. Null
Answer» B. Two
Discussion