E20-520

In order to enhance the further optional of Oracle certification,now Oracle company offer four different types of the certifications. These certifications are designed for those engaged in the field of Oracle  Staff, including DBA, developers and managerial staff.

first,Oracle Professional DBA Certification: This is a basic certification for Oracle database management (need 4 exams) 
 
second,Oracle Network Application Developer Certification: This is a certificatio about SQL, PL & SQL and web development (need 4 exams) 

third,Oracle Java Developer Certification: together with Sun company designed for the Oracle Java Developer Certification (need six tests  as well as Sun and the Oracle of the convergence test) 

fourth,Internet Database Operator Certification: this is a separate examination special designed for Oracle management staff with specialized knowledge who engaged in database test and internet applications management

if you want to pass all these Oracle tests,you must need to have the best study guide .Testpassport can help you ,please visit this site : http://www.testpassport.com/Oracle/