11.4 Mapping with Other Applications

11.4 Mapping with Other Applications

As in the other steps of data profiling, you need to map complex data rules from source systems to target systems when migrating applications and consolidating data sources. The types of data rules described in this section are likely to be very important to the target system because they represent business policy.

Decision support systems would rarely have code to check data rules of these types. They assume that the data coming to them is accurate and that any checking has occurred either in the operational systems or in the transformation process.