SCEA Objective - 4.2

[Rahul Mishra]

Hello Ranchers,

For the following exam objective -

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.

I have been trying to rank the following commonly used technologies under the headings, and here is my list (from the best to the worst, in that order)

Ease of Development - JPA (Easiest) ,ORM/CMP/JDO (Relatively Easy) ,BMP/JDBC (Difficult)
Performance - Debatable (For Specifications such as JPA it depends on the provider/container, for JDBC - depends on the driver used/developer skill)


Can any of the fellow ranchers bring their perspective into this discussion? Any pointers are appreciated.

Regards,
Rahul

[Bigwood Liu]

The intent of the test is to exam your ability to choose different technology under different situation.

[Antonio Fornie]

Hello.

So, what do we need to know about JDO and JPA? Only in wich case should I use each one? What kind of questions can I find about JDO or JPA?

Thank you very much!

antonio

[prathap venkata naga yelugula]

This is one of the area which tally's syllabus and experiance in deciding architecture flow.
Required materials are enough for getting comprehensive knowledge in that area.

Books:
1 EJB 3 in Action
2 Pro EJB 3 Java Persistence API
3 Mastering EJB 3.0
4 Java EE 5 Tutorial. Part IV Enterprise Beans.
5 Java EE 5 Tutorial. Part V Persistence.
6 Nice to have SCBCD 5

This is not only for Exam...for getting comprehensive knowledge on in that layer.....


Cheers!
Pratap.

[Antonio Fornie]

Thank you very much! And does any of theses books say anything about deciding wich one to use (JDO or JPS) for specific scenarios or for given requirements?

antonio

[prathap venkata naga yelugula]

Hi antonio,
may be you need refer some other core books related to JDO/ JPS . but the above mentioned books results the impact of Web/Businees Tier
Functionality in a modest way.

Cheers!
Prathap.

[J J Wright]

Re: JDO vs JPA

Check out the Open JDO documentation (specifically the links under the "General" heading).