The CX310-091(Sun Certified Business Component Developer for the Java Platform, Enterprise Edition 5) test checks your ability to understand, test, and develop basic EJB code. It requires you to have a good understanding of enterprise Java beans 3.0, and the ability to write code for well-defined design applications. The test asks all sorts of tricky questions, which you might not encounter in the real world. Practicing the following things with the subject will make you confident enough of scoring well in the test:
- Identify characteristics, programming restrictions, and benefits of EJB 3.0. Understand the responsibilities of the EJB container and those of a Bean Provider.
- Understand the differences between stateless session beans, stateful session beans, and message-driven beans for EJB 3.0.
- Identify correctly implemented deployment descriptor elements for an enterprise Java bean.
- Identify the responsibilities of the container and the services that it provides in the Enterprise JavaBeans version 3.0.
- Use annotations and deployment descriptor in code and understand how the two mechanisms interact.
- Understand the life cycle of session and message-driven beans. Understand the use of PostConstruct and PreDestroy methods.