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Developing software is a rewarding and enjoyable activity. Developing software is also one of the most complex things that humans have ever undertaken. Something as simple as a web browser can contain in excess of 5 million lines of code. To develop software effectively once you get beyond trivial programs requires tools and strategies to help you keep things organised and robust. Even if what you plan to develop is not that ambitious (say, a couple of hundred lines of code), you can still benefit greatly from putting some time into really understanding the problem you are tackling and planning your solution.
If I were given an hour to solve a problem I would spend 40 minutes studying it, 15 minutes reviewing it and 5 minutes solving it. (supposedly Einstein but this has been disputed)
On the following pages we will look at a series of tools and strategies to help you understand the problem and plan the solution. As well as describing what the charts and diagrams are we will also discuss things to consider in terms of creating them effectively and utilising them to their full potential. Just going through the motions and creating them is not enough to create awesome, solid software
These are listed in a logical order which roughly follows the way you would implement them when developing your system. In reality however, several of these would be in development in parallel at any given time. Together they aim to help you develop a solid understanding of the problem and then work towards building a complete and effective solution.
Outline
- IPO (Input Process Output) tables
- Systems Flowcharts
- Context Diagram
- Data Flow Diagrams
- Structure Chart
- Storyboards
- Metalanguages
- Good Programming Practice
- Debugging Techniques
Structured Approach
The Structured approach to software development is one of the more traditional approaches. It forms the basis for developing many large products and solutions. Even though there are various other approahces out there such as Agile which are gaining in popularity, they still tend to have some basis in the structured approach. They all implement the basic stages of the Structured approach, typically in less formal ways. The tools and strategies I will discuss here are primarily focused around the Structured Approach and are just as applicable and very easily adaptable to other development approaches. In general, having an understanding of the Structured Approach will make you more effective in undertaking software development using another approach
- Defining and Understanding the problem
- Planning and Designing the solution
- Implementing the solution
- Testing and Evaluating the solution
- Maintenance
Data and Information
The reason for the existence of just about every piece of software is to produce information of some sort. To do this it takes data as inputs, processes or manipulates it in some way and then, hopefully, presents the information to us in an appropriate and effective way.
- The output (information) that the system should produce
- The inputs (data) required in order to produce it.
- The processing required to achieve that.
- Effective and intuitive ways to do all of the above.
Client satisfaction is our prime importance and we ensure to deliver the same at any cost. Hence to assure the same, we have aligned our activities in order to process orders of clients within stipulated time frame. Our genuine efforts has also helped us to promote our business relations with our loyal clients, which has also further helped us to make new ones as well.
