Data Flow Diagram for Services Example

Here’s a quick example of how to use the Decomposition Matrix to create a data flow diagram (DFD) that shows the decomposition of services in a service-oriented architecture (SOA). I’ve chosen a generic example of legacy systems that will be accessed by services. This will create a decomposition for a services interface layer on top…


Published:September 10, 2008 View Post

Business Process Decomposition, Part 3

I’m now going to modify and expand the Decomposition Matrix to more fully reflect the story in Web Services and Service-Oriented Architectures, The Savvy Manager’s Guide. First, the input of travel dates and locations is changed to travel dates and customers. In the story, C. R. chooses the dates and customers, not locations. Locations for…


Published:April 24, 2008 View Post

Business Process Decomposition, Part 2

The first bit of complexity that I am adding to C.R.’s business trip is the choice of travel options. In Part 1, there were inputs and outputs for flights, rental cars, and hotels. Now, I am adding the possibility of air/car/hotel packages from Travel Agencies that provide information on packages as a service. C. R….


Published:February 12, 2008 View Post