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.