Copyright 2002 by
Prentice Hall, Inc.
10-
9
How Can Legacy Systems be
Improved?: Options
1.
Restructure the system:
(cont.)
E.
Ensure that the old and new
versions produce the same output
F.
Minimize overhead introduced by
restructuring (optimizer package)
G.
“Rationalize” the data by giving all
uses of the same data one data
name