what is SAP R/1, R/2, R/3 ? or Difference between R/1,R/2,R/3 ?
SAP R/1
SAP R/1 was the first version, and it is one tier architecture in which three layers Presentation, Application, and Database are installed in one system/server
Server one – Presentation + Application + Database
SAP R/1 R/2 R/3 Tutorials
SAP R/2
SAP R/2 is the mainframe version of the software, and it is 2 tier architecture in which three layers Presentation, Application, and Database are installed in two separate servers.
(Server one – Presentation, Server two – Application + Database
SAP R/3
SAP R/3 is the client/server version of the software, and it is 3 tier architecture in which three layers Presentation, Application, and database are installed in three server/system.
Server one – Presentation, Server Two – Application, server Three – Database.