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