Real Time Data Access (RDA)

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Some organizations require making decision based on real time up to-date details regarding certain process or product information. For Example: Stock markets, Communications, Defense, Aeronautics, Supply chain management etc. Here each of and every transaction data matters the most in making a decision at a priority level, and it’s very crucial to transfer data to the reporting side at shorter & regular intervals. RDA: Extracts data from BW with a high frequency from source systems & migrates it to BI system. Real time data acquisition which supports tactical decision-making is a framework for deriving information from data as data becomes more complex. Frequency is data transfer is quite high. Follows regular type of data transfer, where extracted data runs through extraction & transformation process. Although not true real-time, data transferred is physical data  




The core of RDA is the SAP Source systems. Other source systems can be linked to the concept of RDA only if they act as a Web service and transfer data via SOAP messages to SAP BI.  




For SAP systems, the data sources that need to be connect by RDA need to be explicitly marked as 'Real time enabled'. For Generic Data sources, you can specify if a data source is able to handle accesses in real-time or not. The decision if a Generic Data source needs to be marked as real time enabled depends, how generic deltas are created.

 Condition 1:  The delta defining fields should enable a high performance access to new/modified data. I.e. delta defining field must be selective & must be max. Affected by different values

 Condition 2:  If there is a recent extraction, identification of the relevant data records from delta creation must contain only those recent data records.

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