Hurray I passed SCBCD with 90%. I know it is not as good score as other people (Donald 100%, B Sathish 97%) but I am very happy with my score that. I just studied for less than a month and I did not had any knowledge of EJB before, rather I have no experience in J2EE environment. As I am still a student. In past 2 months I have give 3 Sun certification(SCJP 1.4 88%, SJWCD 78% and SCBCD 90%). I am really very thankful to Kathy and Bert for their lovely HF series and other books as well. SCBCD developer exam is very straight forward. I would say HF EJB is enough to score more than 90%.I just prepared from that and the real exam is 70%-80% similar to that of HF EJB mock exam. I would also like to thank B Sathish for his advice on EJB-QL. Writing down the Queries yourself really help to get the problem correct at the very first time.
I always know that you are a person with great detemination and hardwork. Ability is what you're capable of doing. Motivation determines what you do. Attitude determines how well you do it. In such a short time you did certification with flying colours.