EJB 3 in Exam part 1

[rania ferrag]

Hi Every one,

I'm preparing for the exam part 1 of SCEA, and this week I'm studying the EJB 3. I have book from Apress which find it very good.
My Questioon is, what we have to know and understand for the exam for EJB and JPA (java persistence API). Do we have to master all details of Entities and their RelationShips (@oneToOne, @OneToMany, @ManyToMany..) and all the annotaion that Entities have in EJB 3 and the Mapping Entity Inheritance Hierarchies, howEjb 3 works with web services or be as Web Services etc ...
For those that did pass the exam and remember the part 1, any advice what we have to understand for the Exam ?

Your help and advices are very helpful for us and thank you so much in advance for your response,

My Best Regards,

Rania

[Ådne Brunborg]

Originally posted by rania ferrag:
Hi Every one,

I'm preparing for the exam part 1 of SCEA, and this week I'm studying the EJB 3. I have book from Apress which find it very good.
My Questioon is, what we have to know and understand for the exam for EJB and JPA (java persistence API). Do we have to master all details of Entities and their RelationShips (@oneToOne, @OneToMany, @ManyToMany..) and all the annotaion that Entities have in EJB 3 and the Mapping Entity Inheritance Hierarchies, howEjb 3 works with web services or be as Web Services etc ...
For those that did pass the exam and remember the part 1, any advice what we have to understand for the Exam ?

Your help and advices are very helpful for us and thank you so much in advance for your response,

My Best Regards,

Rania

"SCEA is a mile wide and an inch deep".

Remember, SCEA is not a programming certification. Of EJB, you need to know the different types, you need to know the lifecycle of EJB.

The questions you line up, I would more expect to find in the SCBCD exam.

Remember, SCEA is not a programming certification. It is an architecture certification.

[rania ferrag]

Thank you very much Adne for your prompt response!

Best Regards,

Rania

[Farbod H Foomany]

Hi,
Should we know EJB lifecycle now?
and should we know about the changes in the past for example that REMOTE became COMPONENT in 2.0, etc.. those things that don't exist in EJB 3 now...

Regards
Farbod

[Ådne Brunborg]

I recommend reading Sun Certified Enterprise Architect for the Java Platform, Enterprise Edition 5 (Step 1 of 3) (CX-310-052) thoroughly. There you will find this section:

Section 4: Business Tier Technologies

Explain and contrast uses for entity beans, entity classes, stateful and stateless session beans, and message-driven beans, and understand the advantages and disadvantages of each type.

Explain and contrast the following persistence strategies: container-managed persistence (CMP) BMP, JDO, JPA, ORM and using DAOs (Data Access Objects) and direct JDBC technology-based persistence under the following headings: ease of development, performance, scalability, extensibility, and security.

Explain how Java EE supports the deployment of server-side components implemented as web services and the advantages and disadvantages of adopting such an approach.

Explain the benefits of the EJB 3 development model over previous EJB generations for ease of development including how the EJB container simplifies EJB development.

Then I will consider carefully what you need to know, e.g. whether or not EJB lifecycle knowledge is needed to fully explain the difference between stateful and stateless session beans, for instance.

[rania ferrag]

THanks Adne for your response,

Regards,
Rania