5 METADATA AND KEY BUSINESS DATA AREA DECOMPOSITION
In this chapter I extend the discussion of how to break a large programme down into small sections for effective control. I introduce the concept of metadata and its use within PDMv2.
METADATA AND PDMv2
Data migration projects are intimately concerned with data (as the name suggests) so it is perhaps not surprising that a rigorous methodology like PDMv2 adopts a formal approach to cataloguing its understanding of the data elements that it confronts. This approach is necessary because the process has to deal with multiple legacy data sources created by different people (some technical, some non-technical) at different times, in different places for different reasons. Some level of abstraction ...