Copyright 2002 by
Prentice Hall, Inc.
10-11
Case
Example: GTE Directories
nUsed reengineering to get their corporate data in shape.
n4 main DB, designed
application-by-application
nRecords contain data
elements that have no business
relation to each other, making them very difficult to reuse, enhance, and change
nMaintenance is the bulk
of the work of DB administration
group
nGTE using Bachman tools to redesign old DB, design new DB using portions of existing ones, and create their blueprint for the future