Infogain Interview Question

1. Can we use nested transactions in SQL? IF yes then how? 2. What are user defined types in SQL? 3. Can we apply clustered index on the table which do not has any unique key? 4. How will you raise error in SQL manually? 5. How you handled SQL injections? 6.What is the scope of temp tables? 7. How would you link 3 diff webform with single code behind file? 8.What are the benefits of Abstract class? Practical use. 9. Diff between view state and session state. 10. Lots of question around abstract class and interface.