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If we take a closer look at the order management function, we see that it's comprised of a series of business processes. In its most simplistic form, we can envision a subset of the data warehouse bus matrix that resembles Figure 5.1.
As we saw in earlier chapters, the data warehouse bus matrix closely corresponds to the organization's value chain. In this chapter we'll focus specifically on the order and invoice rows of the matrix. We'll also describe an accumulating snapshot fact table that combines data from multiple order management processes.