SAP NetWeaver Business Warehouse
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SAP Business Warehouse (SAP BW) is SAP’s Enterprise Data Warehouse product. It can transform and consolidate business information from virtually any source system. It ran on industry standard RDBMS until version 7.3 at which point it began to transition onto SAP's HANA in-memory DBMS, particularly with the release of version 7.4.
In 1998 SAP released the first version of SAP BW, providing a model-driven approach to EDW that made data warehousing easier and more efficient, particularly for SAP R/3 data. Since then, SAP BW has evolved to become a key component for thousands of companies. An article, provided the history of SAP BW from inception to the newer releases powered by SAP HANA.