PSA (Persistent Staging Area)


è 
PSA is the inbound storage area for data from the source systems in BW system. 
 
èThe requested data is saved, unchanged from the source system 
 
èRequested data is stored in the transfer structure format in transparent, relational database tables in the BW system. 
 
èThe data format remains unchanged, meaning that no summarization or transformations take place, as is the case with InfoCubes

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