What are Integration Testing and Regression Testing?

How to get top two salaries from employee tables?

What is the difference between regression testing and retesting?

What is the difference between bug log and defect tracking?

if u r only person in the office and client asked u for some changes and u didn’t get what the client asked for what will u do?

If a very low defect (user interface) is detected by u and the developer not compromising with that defect,what will u do?