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SAP HANA is a new database
Before SAP HANA was released, there was no SAP database - you had to install SAP ERP (or the application you were using) on a third-party database, such as Oracle or SQL Server. SAP developed the HANA database to fully leverage the power of SAP's next-generation S/4 software.
The core of SAP Basis is the application layer with one or more application servers and a message server. The message server is used for communication between the application servers and transmits jobs between them. The application layer communicates with the database layer on the one hand and the presentation layer on the other. The applications on the application server request the required data from the database, process it and prepare it for the user, who displays it in his Graphical User Interface (GUI) via the presentation layer. Conversely, the application server passes information that the user enters via the GUI on to the database.
System maintenance and support of running systems
Migrations occur, for example, when a customer decides to host his systems at Rödl & Partner and the SAP systems therefore have to be migrated from in-house operation or from the original hosting provider to our data center. Also in the course of a conversion to S/4HANA, the data is migrated from the original database type to an SAP HANA database. This is also done with the tool "SUM" (Software Update Manager) via the so-called "DMO" (Database Migration Option).
Maintaining the availability of critical business processes not only requires a high-quality infrastructure, but also places equally high demands on the management and operation of the underlying SAP NetWeaver and SAP HANA platforms due to their high complexity. These platforms are often referred to as SAP Basis.
For administrators, a useful product - "Shortcut for SAP Systems" - is available in the SAP basis area.
Step 1: Create a master role Inheritance always requires a parent role, because all properties are inherited from it.
These specify how the outgoing data should be processed.