What is DBA/Oracle? I had never been with IT Field, and it is all New thing for me. I want to work with IT. Can u guide me that how can i ge

What is DBA/Oracle? I had never been with IT Field, and it is all New thing for me. I want to work with IT. Can u guide me that how can i get job in IT field. I did BBA in HM and Advance Diploma in Computer Application. Only Oracle Certified person can work with reputed Company like : Wipro, HCL, H