Question

________ deletes a data item from a database

(a) Delete(Q)

(b) Insert(Q)

(c) Drop(Q)

(d) None of the mentioned

I had been asked this question by my college professor while I was bunking the class.

My doubt stems from Insert, Delete Operations and Predicate Reads in chapter Concurrency Control of RDBMS

Answer 1

Right option is (a) Delete(Q)

Best explanation: Delete(Q) deletes a data item from a database. Insert(Q) inserts a new data item Q into the database and assign Q an initial value.