Short Question: Two schema type of 3 level architecture. Equi-join se tha aik , knsa principle is may use Hoga . Long: Scenario given abc uni have many busses , one driver assign to each bus , one bus has many students... cardinality relationship ( 1 to 1 , 1 to many etc .) A student borrow books form library but one student buy one but at a time , relationship in alphabetic notation Mcqs : mcq handout se thy sary handout (highlighted) achy se read kiye hn tu easily mcq ho jayn hn .