I can say I am a OCA Database Administrator. Oraclestudy has a top class creation in form of practice exam which is utterly perfect. I used their 1Z0-052 oracle database 11g Administration 1 practice exam while preparing for my oracle certification exam, believe me it was really life saver for me. I was able to clear my exam with unbelievable percentage, thank you oraclestudy team for all your support. I recommend and suggest oraclestudy.com practice exams to anyone who wants to score outstanding. Keep it up guys.
Thank you so much.