Software Design Goes Through Multiple Stages
There is more to software design than simply sitting down and writing a program. Often people think that to create software someone just writes a program and then puts it on the market. While someone can try this approach to software design, it is ineffective and will fail the majority of the time.
Selecting a Purpose
Before you can write a software design, the first step is to create a purpose for the software design. You need to answer specific questions. Who will be using the software? What system will the software be operated on? What are the tasks for the design? Is the design object oriented or task oriented? Will the software be on a single system or multi-system? Will the design be for a specific company or will it be for the general public? What type of configuration set-up will be needed for the design?
Write a Model Once you've determined the purpose of the software design the next step of the process is to write out a model of the software design. A model for the design often is written with tables and flow charts. The logic behind the model is represented and explained in great detail. The model is essentially the pattern, layout or plan that the developer will follow in creating the actual coding and syntax for the software design. A model also enables the programmer to anticipate problems before actually wiring out the program. The errors in logic can be seen and corrected in the model. Also, at this stage if the software is going to be custom designed choices can be given to the client for additional features and applications. Previous requests from the client may need to be altered and adjusted to fit the logic and sequencing. Building the Software Design After all the details have been written and displayed on the model of the software design, it is time to actually sit down and create the software. The model will be followed to write the syntax and appropriate codes for the program. Testing During the building phase of software design, the codes are periodically tested. Following the model, you can anticipate and project what the test results should be to indicate that the program is working correctly. Internal testing is a vital part of the software design. During this testing phase, modifications and adjustments might need to be made to further develop the design. Sometimes what looks like it will work on the model will not work in reality once the actual building of the software design has begun. After the software design is completed, it is then installed on the appropriate system or systems. Additional testing is done of the final product to see how it operates in beta version. Again any issues or problems will need to be addressed and the design will need final touches made. Release When all testing has been completed and the software design is completely functional and operational it can then be released to the client or to the public. Appropriate written documentation should be created to help users with software. This is the final phase of the software design process. The documentation should be comprehensive but not over-whelming.
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