Question - Mention what is an application, presentation, and database servers in SAP R/3?
Answer -
The application layer of a R/3 system is made up of the application server and the message server. Application programs in an R/3 system run on application servers. Using the message server, the application servers communicate with presentation components, the database, and also with each other. All the data are stored in a centralized server, which is known as a database server.