Given a continuous source of data relating to transactions, the transaction data may be segmented and processed in a data flow arrangement, optionally in parallel, and the data may be processed without storing {HEAD ~ the data} in {TAIL ~ an intermediate database} 
in
Given a continuous source of data relating to transactions , the transaction data may be segmented and processed in a data flow arrangement , optionally in parallel , and the data may be processed without storing { HEAD ~ the data } in { TAIL ~ an intermediate database }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL