1.how to find maximum salary in salary column? 2.what is aggregate function? a. Left, b. Right, c. A good, d. Join 3.how to find unique values in a column? 4.how will you save the updated data's? a. Commit, b. Rollback, c. Save point 5.how to undo? a. Commit, b. Rollback, c. Save point 6.what is other name of equi join? 7. Select 'hi' from dual where null=null.O/p for this? Remaining 7 qns based on scenarios using between, where, in, and, or.... Its so easy..