GSM Plus Infotech interview questions

1 round: Hr + Technical introduction about yourself, oops concepts, explain polymorphism with an example. Database query: they asked me query on how to select data from the table, add & delete data from the table, drop the table. Explain your project. How you made your project, what you contributed in your project. write a java program on how to reverse the string. If you have done well in this round, they will call for the 2 round. You can speak in Tamil. My interviewer said he is okay that I can speak in tamil.