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SAP R/3
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===Presentation layer=== SAP allows the IT supported processing of a multitude of tasks which occur in a typical company. The newer SAP ERP software differs from R/3 mainly because it is based on SAP [[NetWeaver]]: core components can be implemented in [[ABAP]] and in [[Java (software platform)|Java]] and new functional areas are mostly no longer created as part of the previous ERP system, with closely interconnected constituents, but as self-contained components or even systems.
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