- 34 -
The G/L system was based on a widely used vendor-supplied
package known as Financial Control System (FCS). After purchasing
the FCS G/L system, Norwest customized approximately 25 percent of
the vendor code.
Throughout the relevant time period, NTS needed to upgrade the
system and install new vendor releases. This posed problems
because of the customization work already conducted by NTS on the
vendor code. The upgrading required NTS to study how to "retrofit"
the new vendor code with both the old code and the customized code
without sacrificing the functionality and efficiency needed. The
retrofitting process involved the use of Norwest's SDM and included
reiterative unit, integrated, and acceptance testing. The testing
usually sought to isolate problems in the code that required
debugging or rebuilding.
During the retrofitting process, NTS found that the vendor
code was inefficient with respect to the corporate consolidation
component (consolidating and eliminating transactions of the
various corporate divisions) of the software. This problem
required a redesigning of the software by NTS. To accomplish this
redesign, NTS examined various structures (containers for holding
the data) and tools for providing similar functionality as provided
in the vendor code but with greater efficiency.
Page: Previous 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 NextLast modified: May 25, 2011