Balancing of DFD:

The concept of balancing states that all the incoming flows to a process and all the outgoing flows from a process in the parent diagram should be preserved at the next level of decomposition. The goal of the balancing feature is to check the system internal consistency, which is particularly useful as different levels of expertise are generally involved in a project. When we decompose a process, Power Designer helps you initialize, in the sub diagram, the objects from the upper-level to link to the sub-process. Power Designer automatically retrieves global objects, such as external entities or data stores and creates object shortcuts, if need be.

The following example shows a top level DFD, in which we are going to decompose the Collect Payment process:

atOptions = { 'key': 'a900f2dbf175e78754c26c6231a4b673', 'format': 'iframe', 'height': 90, 'width': 728, 'params': {} };