Design of the SAP landscape
Default Scenario
SAP Basis consists of three layers: a database layer, an application layer and a presentation layer. The database layer manages all the data of the SAP system in a database located on the database server and administered by a database management system (DBMS). The database supplies the connected SAP applications with the required data, data tables or system control tables. It also receives and stores new information generated by the user.
Without this provisioning component, adjustments to employee permissions in the respective IT resources would have to be implemented by the relevant system administrators. However, manual provisioning processes are by their very nature a source of errors. If an employee's tasks change, the system administrator should consider all active user accounts when modifying and deleting accounts. A modern IDM system therefore helps companies to keep track of users and their permissions, especially in complex and heterogeneous system landscapes.
Homogeneous
SAP Basis ensures smooth operation of the SAP Basis system. The SAP Basis system is a kind of operating system of the R/3 system or SAP ERP. It includes the three layers database, application and presentation. In addition, Basis includes many SAP middleware programs and administration tools. With Basis SAP applications can be used compatible and independent of operating system and database and can be enriched with the necessary data.
The presentation layer is based on the software components, collectively called "SAP GUI". This includes several possible implementation variants: for example, SAP GUI for HTML (Web GUI) and Web Dynpro for ABAP (WDA). Since the respective GUI depends entirely on the concrete application, the presentation layer looks very different in practice.
"Shortcut for SAP Systems" is a PC application that simplifies or even facilitates many activities in the SAP basis.
The tasks of a company's own SAP Basis department are undergoing enormous change at many companies, as SAP is also relying more and more on cloud services.
If you want to get more information about SAP basis, visit the website www.sap-corner.de.
If you want to jump directly to a step-by-step guide, just scroll down to the bottom, where I summarised everything once.