The typical definition of an atomic task or process is one that cannot be decomposed further. This is vague and subject to interpretation. The Decomposition Matrix on this site uses a specific definition: A task (for business process diagrams) or a process (for data flow diagrams) is atomic if every input relates to every output…
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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…
Data Flow Diagram for Services
While correcting the defects noted earlier, I added an option for the display of data flow diagrams. This option displays data flow diagrams from bottom to top. This is the way many of us think of services in a service-oriented architecture (SOA). Previously, the only display option for data flow diagrams was from left to…