The customer for this chapter is the same manufacturing company that we discussed in Chapter 3, "Building a Data Warehouse." We will be looking at the broader integration issues underlying the data warehouse solution, taking into account the sources of information and other business processes.
The manufacturer has grown partly by acquisition, and the need to integrate multiple disparate systems is proving costly and difficult to achieve. Due to the high cost and risk of moving each of the businesses to a single enterprise resource planning (ERP) solution, two systems with different reporting capabilities are currently used. Also, additional information such as budgets and forecasts is generated outside the ERP systems.
This has led to the following problems for the business: