Everything you want to know about the CX310-091 exam

Q. What are the prerequisites for the SCBCD 5 exam? A. Before taking the SCBCD 5 exam, you must first pass the Sun Certified Java Programmer exam (CX310-025 or CX310-035 or CX310-055 or CX310-065). Q. Which version of EJB does it cover? A. EJB 3.0 Q. Where can I get the......
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SCBCD CX310-091: Short Notes: Exam passing tips

EJB 3.0 Overview EJB 3.0 specification does not require a session bean to implement the javax.ejb.SessionBean interface. A session bean puts all the business methods into a business interface. The EJB container for version 3.0 must provide support for persistence. However, it may or......
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Skills required for Sun test 310-091

Understanding the programming restrictions that apply to EJB 3.0. Using the annotations and deployment descriptor in your code individually and in combination. Identifying the requirements and responsibilities of the EJB container in providing various services. Differentiating between the......
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Things to practice for Sun test CX310-091

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......
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Differences between EJB 2.1 and EJB 3.0

The Enterprise JavaBeans 3.0 specification is intended to improve the EJB architecture by reducing its complexity from the developer's point of view. There are many differences between the 2.1 and 3.0 versions. The important differences between the two versions are as follows: EJB 2.1......
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EJB programming restrictions

An enterprise bean works best when it follows the EJB programming restrictions. A bean provider must follow these to ensure that the enterprise bean is portable and can be deployed in any compliant EJB 2.0 container. If a bean class does not follow these restrictions, it will still work. However,......
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EJB Transaction

A transaction is a unit of work that consists of a group of activities performed as a unit such that either all or none of them succeed. An example of where transactions could take place is an online bookstore. In an online bookstore, the purchasing of books involves the following steps: A......
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Primary key of an entity class

A primary key is an identity in an entity class. Every entity bean must have a primary key that is unique for a class. A primary key can be of the following types: Java primitive type Primitive wrapper type java.lang.String java.util.Date java.sql.Date A primary key has......
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Describe the life cycle of a message-driven bean.

The life cycle of a message-driven bean has two states, namely 'does not exist' and 'method-ready pool'. A message-driven bean does not maintain any client specific state. The container is responsible for maintaining the life cycle of a message-driven bean. It provides services such as......
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Describe the life cycle of a stateful session bean.

The life cycle of a stateful session bean is shown in the following image: A stateful session bean can have three states during its life as follows: Does not exist Method ready Passivated A stateful session bean must be annotated with the @stateful annotation or denoted in the......
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