Enterprise Javabeans: Meaning And Types

<h1>Enterprise Javabeans: Meaning And Types</h1>Author: <a title="Synapse India" href="http://www.articlesbase.com/authors/synapse-india/37537.htm">Synapse India</a> The Enterprise JavaBeans (EJBs) is one of the several APIs in the J2EE platform. These are a collection of Java classes, XML files and interfaces for developing secure multi-user components in a J2EE environment. Just like JSP and JavaBeans, EJBs run inside an EJB container (application server). The container provides some built-in services for EJBs to function. These services include resource management, security, component pooling and multiple-client handling. There are three types of Enterprise JavaBeans: <ul> <li>Message-Driven Beans</li> <li>Entity Beans</li> <li>Session Beans</li> </ul> Message Driven Beans are new to the Enterprise JavaBeans specifications. They provide a system for EJBs to respond to asynchronous JMS messages from other sources. Message Driven Beans have opened a new standard for <a href="http://www.synapseindia.com/website-development.html" title="web and software development">web and software development</a> companies to create Message Oriented Middleware based applications. Entity Beans are data in an Enterprise JavaBeans mechanism. The data is included in a database or any other data source. There are two kinds of Entity Beans: Bean-Managed Persistence Entity Beans and Container-Managed Persistence Entity Beans. BMP beans provide more control to <a href="http://www.synapseindia.com/website-development.html" title="web and software development">web & software development</a> companies to save and retrieve data from non-database sources like XML files. CMP beans are simpler to develop. They work quite well with access database and are responsible for saving and retrieving the data from databases. Enterprise JavaBeans has certain drawbacks in <a href="http://www.synapseindia.com/website-development.html" title="web and software development">web and software development</a> process. One of the major drawbacks is its expensiveness. EJB containers (application servers) are quiet expensive. The license fee itself is one thousand dollars. Moreover, web & software development companies have to pay the fee all over again if the application server crashes. Most developers think that an EJB based system is difficult to develop and maintain, but a web development in India has the experience of building and maintaining EJB systems, thus negating this false assumption. Due to the rising standard of UML to model business practices, it has become easy to architect, build, deploy and maintain EJB based J2EE systems.About the Author: I am the webmaster at <a href="http://www.synapseindia.com/"><a href="http://www.synapseindia.com" target="_blank">www.synapseindia.com</a></a> – A web development company offering <a href="http://www.synapseindia.com/website-development.html" title="web and software development">web and software development</a> to businesses in India and abroad.Article Source: <a href="http://www.articlesbase.com/">ArticlesBase.com</a> - <a href="http://www.articlesbase.com/software-articles/enterprise-javabeans-meaning-and-types-787119.html" title="Enterprise Javabeans: Meaning And Types">Enterprise Javabeans: Meaning And Types</a>

The Enterprise JavaBeans (EJBs) is one of the several APIs in the J2EE platform. These are a collection of Java classes, XML files and interfaces for developing secure multi-user components in a J2EE environment. Just like JSP and JavaBeans, EJBs run inside an EJB container (application server). The container provides some built-in services for EJBs to function. These services include resource management, security, component pooling and multiple-client handling.

There are three types of Enterprise JavaBeans:

Message-Driven Beans
Entity Beans
Session Beans

Message Driven Beans are new to the Enterprise JavaBeans specifications. They provide a system for EJBs to respond to asynchronous JMS messages from other sources. Message Driven Beans have opened a new standard for web and software development companies to create Message Oriented Middleware based applications.

Entity Beans are data in an Enterprise JavaBeans mechanism. The data is included in a database or any other data source. There are two kinds of Entity Beans: Bean-Managed Persistence Entity Beans and Container-Managed Persistence Entity Beans. BMP beans provide more control to web & software development companies to save and retrieve data from non-database sources like XML files. CMP beans are simpler to develop. They work quite well with access database and are responsible for saving and retrieving the data from databases.

Enterprise JavaBeans has certain drawbacks in web and software development process. One of the major drawbacks is its expensiveness. EJB containers (application servers) are quiet expensive. The license fee itself is one thousand dollars. Moreover, web & software development companies have to pay the fee all over again if the application server crashes.

Most developers think that an EJB based system is difficult to develop and maintain, but a web development in India has the experience of building and maintaining EJB systems, thus negating this false assumption. Due to the rising standard of UML to model business practices, it has become easy to architect, build, deploy and maintain EJB based J2EE systems.

I am the webmaster at www.synapseindia.com – A web development company offering web and software development to businesses in India and abroad.

Rate this Article:

0 / 5 stars - 0 vote(s)

Re-Publish

Article Source: http://www.articlesbase.com/software-articles/enterprise-javabeans-meaning-and-types-787119.html

Article Tags: web and software development, web development in india

Related Videos
Related Articles
Ask / Related Q&A

Play

How Web Application Development Evolved

Play

How to Create a Web Page using MS Expression Web

Play

Web Designers Blog Review

Play

How to build Java applications using Servoy Developer

Play

Web Developer Firefox Add-on

Latest Software Articles
More from Synapse India

Iphoto '09

By: arielbella | 08/11/2009
A general overview of Iphoto

Grab A Traffic Technic That Promise Online Success|Mass Article Control Review

By: Felicita Vazquez | 07/11/2009
With Mass Article Creator, you build hundreds or even thousands of high-quality, relevant articles with a click or two with your mouse Mass Article Submitter will submit those freshly created articles to the top article directories for you AUTOMATICALLY.

Duplicate file finder and remover

By: Alex | 07/11/2009
Duplicate Checker is a powerful tool for finding duplicate images, MP3s and any other file types. Using this utility you can organize files on your hard disk or server storage. Image preview, thumbnails and Mp3 bars.

How to burn DRM protected iTunes M4V movies to DVD?

By: Kindour | 07/11/2009
The following step by step guide will share with you how to remove DRM from iTunes M4V movies and TV shows to burn iTunes M4V to DVD for backup, enhancement or playback on traditional TV sets, home DVD players.

Magic Article Rewriter and Spinner

By: Folusho Orokunle | 07/11/2009
This is a Magic Article Rewriter and Spinner review. This program was developed by Alexander Krulik with the hopes of saving time and money when it came to article rewriting, submitting and spinning.

Satellite TV For PC Elite Edition Review

By: Ricky Lim | 07/11/2009
A satellite TV for PC elite edition review reflects several benefits of a satellite tv for PC and reveals the secrete of its utility. It is simply a software that enables you to view tv on your PC for a one time payment (approx. $30-$95).

Bookmarking Demon Review

By: Folusho Orokunle | 07/11/2009
This is a Bookmarking Demon review. Bookmarking Demon is a social bookmarking automation software. One of the hardest things to do is to promote your site.

Help! I Am Not An Accountant

By: Tom Hope | 07/11/2009
Sage features a number of nonprofit software such as the Sage MIP Fund Accounting, Sage Fundraising 50, Millennium, Sage Fundraising 100, and the Sage Fundraising 100 Rainbow Edition.

Things To Know Before You Decide To Use Hidden Text

By: Synapse India | 24/02/2009 | Software
Both Google and Yahoo specify web masters to abhor from use of hidden text or hidden links, as they can lead your website to be taken as unreliable.

Enterprise Javabeans: Meaning And Types

By: Synapse India | 24/02/2009 | Software
The Enterprise JavaBeans (EJBs) is one of the several APIs in the J2EE platform. These are a collection of Java classes, XML files and interfaces for developing secure multi-user components in a J2EE environment.

Dotnet Nuke: Most Popular And User-Friendly Application Frameworks

By: Synapse India | 24/02/2009 | Software
DotNet Nuke application is the result of extensive custom software programming methodologies. This is evident by the fact that it boasts dozens of basic modules.

Online Puzzles – Popularity Sailing Further High

By: Synapse India | 29/07/2008 | Computer Games
Today, the internet medium is used for so many things. You can watch news, listen to music, communicate with people abroad, do shopping etc.

Costume Picking Tips on Halloween

By: Synapse India | 28/07/2008 | Clothing
On the occasion of Halloween, you may run across uncounted scary outfits, movie inspired costumes, comic dresses, theme-based costumes and such others. If you are planning to stand out of all,

Positive Points of Online Gambling

By: Synapse India | 28/07/2008 | Online Gambling
In the UK, online gambling is progressively becoming one of the most preferred gaming options. May be it is because of the ease at which it can be accessed by anyone from anywhere and played without much of complexities involved.

Online Travel Directory: Information Unlimited!

By: Synapse India | 28/07/2008 | Destinations
Are you an avid traveler? If your answer is yes, then you are ought to be in constant search for sources that provide you all-in-one information about different exotic destination of the world. Thankfully, you can easily switch to travel directory online that may fulfill your requirements. Now, you do not have to move from travel agency in order to compare prices and get exact desired information.

Foreclosed Properties at Good Bargain

By: Synapse India | 28/07/2008 | Real Estate
The concept of foreclosed properties is mainly useful for people who want to invest in real estate industry. This system of buying property is equally beneficial for people who are looking for a home at a discounted price. You can get heavy discounts on foreclosure property especially if it has remained unsold for a long time.