A modular is a container for one or more EJB containers. An EJB server manages and coordinates allocation of EJB application resources, J2EE naming functionality, communication with remote resources, etc. A modular container manages the actual EJBs including their lifecycle, object pooling, security, transactions, etc. The modular container is all about concentrating user transaction requests into a shared database. The application server is the modern TP monitor, and the EJB is where the transactional interaction with the database happens. Find information about modular containers and how to properly contain transactions in a shared database.
News:1 - 3 of 26
The JPA 2.0 EntityManager vs. the Hibernate Session: Which one to use?
24 Jun 2013
News - The question for data persistence experts using JPA 2.0 is whether they should be using the EntityManager or the Hibernate Session from JBoss for ORM.
OCPJP & OCAJP: Java 7 training requirement for the Oracle Certified Professional Programmer dropped
21 Dec 2011
News - In order to obtain the certified architect position from Oracle, attending and passing a training course is now required. But what about the Java Professional and Java Associate designations, OCPJP and OCAJP for Java 7?
What is Dependency Inversion? Is it IoC?
TheServerSide Newsfeed | 31 Aug 2011
News - Today we are going to see if we can unravel the mess of Dependency Inversion, Inversion of Control and Dependency Injection. It's important that we understand the concepts behind each of these topics and understand what architectural problems each one is...
Reference & Learning:1 - 3 of 5
Which EJB to use? Stateful, stateless and singleton session beans compared
03 Jul 2013
Tutorial - When developing a service layer, Java architects are often challenged with which of the three session beans, stateful, stateless or singleton, should be used.
Contrasting distributed computing with concurrent programming:
06 Feb 2013
Feature - In many ways, concurrent programming and distributed programming address the same set of programming issues, but there are significant differences between the two, and architects and developers need to understand the difference.
WebSphere Liberty Profile running on Raspberry Pi
13 Jul 2012
Feature Video - The new WebSphere Liberty profile is faster and more efficient than ever. Simon Maple proves this out by showing us how he ran WebSphere on the Raspberry Pi, a tiny little credit-card sized computer that smart blokes in the UK have developed.