The end user has a job to perform that, with or without the use of an automated database system, always requires at least one process. The database must be designed to fit the mold of the requirements implied by these processes. Therefore, business processes drive the need for a database. In this article, you learned about the three basic models used to visually represent business processes. These are the process model, the function hierarchy diagram, and the data flow diagram.
Data stores refer to entities that have been defined.
The functional hierarchy diagram shows all processes, also called functions, that have been defined in a hierarchical format so that it is easy to determine the relationship between processes. The data flow diagram also shows processes, their flows, and their associated data stores. The DFD is used primarily to show how data flows within an organization. Ryan is president and CEO of Perpetual Technologies, Inc. a database company specializing in Oracle consulting and training. Inc. Both have numerous years of experience training and consulting at the DBA level.