EJB


Also found in: Medical, Acronyms.

EJB

This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

EJB

(Enterprise JavaBeans) A software component in the Java EE 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 EJBs
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 Java EE, EJB container, EJB local interface, JavaBeans, distributed objects and component software.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
* The system is implemented by using the enterprise java beans (EJB) framework approach of Sun's J2EE [17][18].
The recently-released Enterprise Java Beans 3 improves upon the old EJB architecture by reducing its complexity from the developer's point of view.
The synchronization process requires suspension of the method execution of the EJB component, allowing the generation of events before and after the method execution, with the immediate execution of rules in response to the events.
EJB is a joint venture consisting of EMCOR Facilities Services, J&J Maintenance and BMAR & Associates.
The Versant database leverages the new EJB standards and the new thinking to offer easy performance upgrades to applications written in this style.
* Testing of a single Enterprise Java Bean (EJB), testing complete applications, and load testing of large-scale applications, in the quality assurance stage;
He claimed improvements in Workshop 8.1 would cut by half the complexity of EJB programming.
The same night a green Seat Ibiza, registration V824 EJB, was stolen from outside a house in nearby Dulwich Gardens.
Enterprise Security with EJB and CORBA provides an instructional, highly detailed manual for providing e-commerce security using EJB (Enterprise JavaBeans) and CORBA (Common Object Request Broker Architecture), similar, but distinct, computer security models.
Implementation of Enterprise JavaBeans (EJB) 2.0 open standards and iKnowledge's object-based architecture expands the ActiveContent deployment to include Sun Solaris Operating Environment (OE), Linux, NT, and Windows2000 operating systems.
Features include ten new refactorings that allow developers to redesign source code automatically without changing the underlying functionality, full J2EE 1.3 certification including support for EJB 2.0, and new mobile licensing that allows developers to check out ControlCenter licences from work and use them elsewhere.