BW uses the same R/3 Basis 3-tier architecture. In this overview, we introduce basic concepts of SAP Basis 3-tier architecture, such as work processes and memory management.
The SAP Basis 3-tier architecture consists of presentation front ends, application servers, and a database server, as shown in Figure B.1.
Figure B.1. SAP BASIS 3-TIER ARCHITECTURE
The SAPGUI interacts with an application server using an SAP presentation protocol, where generic GUI descriptions, instead of prepared screen images, are exchanged. This interaction results in a compact data stream, consisting ...