Why is SLD necessary for connecting backend?

Hi, all.
Let me ask one basic question.
When the WD Java application connects to Backend, what is the role of
SLD? i know that SLD is necessary when runtime but all the necessary info
for connection is set in the JCo connection settings!
What is happening between WD Java and SLD when runtime?
Best Regards.
Sejoon

Hi,
All the technical systems are available to the portal and provide the associartion to the differenet technical systems and provide portal as a single point of access.
There is no direct assosiation between the java system to R/3 system for we are going to use the one connecter for connecting r/3 system from the java system.for this we are using the JCo(Java connector) by this connector only we are communicating R/3 system when you needt to connect the R/3 system that system should be available in your portal then by usin SLD we can add r/3 system as new technical sytem and by using JCo name(two logical destination systems Meta, Model systems) we are directly connecting to avail r/3 and get the data at the runtime.
The System Landscape Directory of SAP NetWeaver (SLD) serves as a central information repository for your system landscape. A system landscape consists of a number of hardware and software components that depend on each other with regard to installation, software updates, and demands on interfaces
Go thru this link you know all the details
http://help.sap.com/saphelp_erp2005vp/helpdata/en/31/f0ff69551e4f259fdad799a229363e/frameset.htm
Thanks,
Lohi.
Message was edited by:
Lohitha M

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Why is SLD necessary for connecting backend?

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