SAP Basis Introduction and R3 Architecture Overview (in English)
CREATING NEW ROLES
Presentation layer: The presentation layer is the top layer of the R/3 SAP Basis system and includes communication with the user. Here, the data is graphically prepared for the user on the terminal device by means of software components from the application programs of the application layer. The presentation layer represents the interface to the user (SAP GUI).
The default value of the profile parameter is 1, so the weak hashes are generated for each user. Preventing weak password hashes The generation of unsafe hash values can be prevented by setting the login/password_downwards_compatibility profile parameter to 0. Note that a change only takes effect when the instance is restarted!
SWPC Continue workflows after system crash
Application layer: The application layer is the central component of the SAP ERP system and is therefore also referred to as the base system. All applications and calculations are executed here. The application layer communicates with both the database layer and the presentation layer. On the one hand, it requests data from the database layer, processes it and then passes it on to the presentation layer. On the other hand, data that is newly entered in the presentation layer is passed on to the database layer and stored there.
Tools such as "Shortcut for SAP Systems" complement missing functions in the SAP basis area.
SAP Basis is the foundation of any SAP system. You can find a lot of useful information about it on this page: "www.sap-corner.de".
UPL is able to record the call and execution of the following ABAP objects: Reports Functional Blocks Classes Methods Subroutines SQL Calls In addition, UPL is able to detect dynamic programme calls and generate transparency about the modifications used.