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EJB

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EJB

(Enterprise JavaBeans) A software component in Sun's J2EE platform, which provides a pure Java environment for developing and running distributed applications. EJBs are written as software modules that contain the business logic of the application. They reside in and are executed in a runtime engine called an "EJB Container," which provides a host of common interfaces and services to the EJB, including security and transaction support. At the wire level, EJBs look like CORBA components.

Three Types of EGBs
The three types of EJBs are: (1) session beans perform processing, (2) entity beans represent data, which can be a row or a table in a database, and (3) message driven beans are generated to process Java Messaging Service (JMS) messages.

Very Versatile
EJBs inherently provide future scalability and also allow multiple user interfaces to be used. For example, both a Web browser and a Java application could be used to access EJBs, or one could be switched for the other at a later date. However, if these are not important issues, servlets, JSPs and regular Java applications can be used for business logic rather than EJBs. See J2EE, EJB container, EJB local interface, JavaBeans, distributed objects and component software.

EJB - Enterprise JavaBeans


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By embracing EJB technology while continuing support for CORBA and RMI, Fujitsu provides customers the flexibility to deploy i-Flow in any environment, thereby preserving IT investment and avoiding the risk of vendor lock-in.
FUJITSU SOFTWARE STRENGTHENS B.P.M. OFFERING WITH INTERSTAGE I-FLOW ... by EDP Weekly's IT Monitor
To accomplish this, JBoss Seam extends the annotation-driven and configuration-by-exception programming model of EJB 3.
JBoss Releases JBoss Seam 1.0; Red Hat middleware division provides ... by Business Wire
Many companies are turning to the use of EJB components to shrink e-commerce development cycles, but those components need to be mapped to underlying data sources.
CEREBELLUM ECOM INTEGRATOR IS AN INTERNET DATA INTEGRATION PRODUCT ... by EDP Weekly's IT Monitor
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