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conducted iterative testing on its accounts following the vendor's
rewriting of the software.
The second notable change was to increase the speed by which
the purchases and sales of securities by portfolio managers could
be sent from the Micro IS system to the Trust TU system. This
change required the writing of polling software that essentially
checked the Micro IS system every 8 to 10 seconds in order to
determine the occurrence of any trades that needed to be sent to
the Trust TU system. The increased speed was achieved by writing
the program in a language called Clipper, after the rejection of
two other languages.
Each of these changes resulted in increased efficiency in the
use of the Micro IS system both in terms of cost per account and
speed of nightly batch processing.
C. Success
The Success system was designed in-house by Norwest to improve
the speed and efficiency of the data processing for Norwest's
equipment leasing business. It supported all aspects of leasing
activity, including origination of contracts, tracking assets,
invoicing customers, tracking collection, accounting, cash
management, and off-line reporting. Success was developed between
1988 and 1991 by a group of 15 to 20 people within the Norwest
Financial Information Services Group (NFISG), the data processing
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