System Analysis & Design. Lesson 06 Traditional Design Techniques. In this lesson we will Describe the steps involved in the Traditional Approach to designing the Application Architecture Develop a System Flowchart
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Traditional Design Techniques
How to approach the Design of the Application …
The Structured Approach to Application Architecture design is very straightforward
In the Analysis Phase of the Traditional Approach you should have developed DFD Diagrams
Finding and Defining it …
As mentioned, the Automation System Boundary indicates many things to us as architects / designers
The System Flowchart …
The System Flowchart is a tried and true model used in Systems Design for many, many years
The System Flowchart provides us (as architects and designers) with an important first step …
The Structure Chart …
The Structure Chart offers a different view of the system that may not be apparent in the flowchart
How do we develop them?
In order to develop a Structure Chart, we require a set of DFD diagrams as well as the System Flowchart.
Let’s say we wanted to start the design of our Purchasing System by examining the Ordering Sub-System … what do we have to help us ?
What we do in the transform analysis is to diagram how we transform inputs to outputs – for each of the high-level modules in the Structure Chart
Developing Pseudo-code …
Some view the process of developing and documenting pseudo-code a waste of time. This is not necessarily the case … pseudo-code is :
As mentioned, the classic approach to Traditional Design is the top-down approach