Describe data and process modeling concepts and tools.

Question

What will be an ideal response?

Answer 1

Data and process modeling is a process-centered approach because it focuses on the flow of data and the processes that affect that data. Data and process modeling produces a logical model of a business information system by examining the system’s inputs, outputs, and processes, and by focusing on the flow of data through the system. Because users and managers often think in terms of business processes, they find it easy to relate to a process-centric approach.
The three main data and process modeling techniques are DFDs, the data dictionary, and process description tools. Data flow diagrams (DFDs) show the flow of data through an information system in a graphical, top-down fashion. The data dictionary documents the contents of data flows, data stores, external entities, and processes. Process description tools include structured English, decision tables, and decision trees.
Structured English is a subset of standard English used to describe logical processes clearly and accurately. A decision table is a tabular description of a logical structure. A decision tree is a horizontal graphic representation of a logical structure.