I want to get CPSDBA certification and want to prepare for the exam, Do I require to take any authorized training from postgeresqlcert.com or I can just take the exam directly?

In order to avoid paper certified Professionals, we believe that candidates must attend some form of structured training before taking the certification exam.

All candidates must complete one of the following training programs in order to register for the CPSDBA, CPSDBD or Amazon RDS / Upgrading to Postgresql examination:
-Class room Instructor-led Training
-Virtual Live Instructor-led Training
-On-Demand Authorized Training License Purchased under the candidate name. Candidate must be able to provide proof of purchase at the time of Exam Registration.