What are the features of EJB?
Key Features of Entity Beans
- Persistence—Entity bean persistence can be managed by the EJB container, or the bean itself.
- Shared Access—Throughout its lifecycle, an entity bean instance can support multiple clients, although not at the same time.
- Primary Key—Each entity bean has a unique object identifier.
What is EJB and its benefits?
Following are the important benefits of EJB − Simplified development of large-scale enterprise level application. Application Server/EJB container provides most of the system level services like transaction handling, logging, load balancing, persistence mechanism, exception handling, and so on.
What is ejb2?
EJB 2.0 introduces additional modeling power, functionality, and complexity to container-managed persistence (CMP), including the new feature of container-managed relationships, or CMR. Currently, entity EJB developers must shoulder the considerable burden of manually managing relationships between entity beans.
When should I use Enterprise Java Beans?
When use Enterprise Java Bean?
- Application needs Remote Access. In other words, it is distributed.
- Application needs to be scalable. EJB applications supports load balancing, clustering and fail-over.
- Application needs encapsulated business logic. EJB application is separated from presentation and persistent layer.
What are the benefits of EJB explain the different types of beans?
First, because the EJB container provides system-level services to enterprise beans, the bean developer can concentrate on solving business problems. The EJB container, rather than the bean developer, is responsible for system-level services, such as transaction management and security authorization.
Are EJB dead?
Well, EJB is certainly alive and very well in Java Persistence Architecture (JPA). JPA is a subset of the EJB3 standard.
What is EJB Tutorialspoint?
Enterprise Java Beans (EJB) is a development architecture for building highly scalable and robust enterprise level applications to be deployed on J2EE compliant Application Server such as JBOSS, Web Logic etc.
What is Enterprise Java Beans explain its advantages?
For several reasons, enterprise beans simplify the development of large, distributed applications. First, because the EJB container provides system-level services to enterprise beans, the bean developer can concentrate on solving business problems.
What is the function of Enterprise Java Beans?
EJB is a server-side software component that encapsulates business logic of an application. An EJB web container provides a runtime environment for web related software components, including computer security, Java servlet lifecycle management, transaction processing, and other web services.