What are presentation, application and database servers in
SAP R/3?

Answer Posted / sanjay

Presentation server -
in very simple word this is responsible to convert end user
input data to application specific language input, that
application can understood users requirement.

application server -
where the real execution of end users input processes.
in sap the application server after getting the users
request collects or brings data from database server and
make process as per the user specifies.

database server -
where the real data is stored in database. it has own work
process which handles the task related to database.

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