Cognizant Programme Analyst interview questions

Introduce urself What is jvm,jre and JDK What is class what is object What is constructor What is inheritance Diff bw constructor and method Why we use constructor If A is a class A obj = new A(): What is first A and what is last A What is interface What interface contain Diff bw interface and abstract class What is DDL what is DML Elaborate about DDL and DML Does commit necessary for DDL Select * ..what is meaning of *? Tell about where clause Tell about order by and group by and give example where to use. How will you implement a doctor appointment booking system. Tell about every module that have to be made.