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Distributed Technologies

Rajesh Boddepalli
Greenhorn

Joined: Oct 28, 2002
Posts: 8
Why we go for EJB eventhough RMI also Distributed Technologies.
What is the main diffrence between RMI and EJB?
Rajesh
boddepalli@yahoo.com


Boddepalli,<br />Elansoft Infotech.<br />Hyderabad-34,INDIA
ib idris
Greenhorn

Joined: Aug 02, 2003
Posts: 29
RMI and EJB are different technologies. RMI lets you use objects on remote server. EJB lets you work with beans. RMI has the disadvantage of slow response because of network overhead.
http://galileo.spaceports.com/~ibidris/
R K Singh
Ranch Hand

Joined: Oct 15, 2001
Posts: 5371
EJB is part of J2EE technology.
EJB makes use of RMI-IIOP protocol for network calls.
EJB provides you some basic functinality almost mandatory for all enterprise applicatiosn like transaction, security, concurrency, DB connection pooling, messaging, location transparency.
On the other hand RMI is first step from Java technology for remote procedure calls. It helps you to call remote methods i.e. methods of objects residing on other server. But it does not provide basic functionalities like above mentioned needed for enterprise apps.


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subject: Distributed Technologies