Development stage, testing stage and implementation stage

Here I am going to show you how the development stage, testing stage and implementation stage

Development stage

After your done Analysis and Designing Stage, you will start doing stage. Development stage is a stage to finalize all the files structure and put all the parts that you design or made into one single system. Example, if there are files, you organize it according to the type of file and make a file structure.

To make sure the right data is in the right file and are following the rules that are set, there are methods that are adopted to check this, which are Validation Routine and Verification Method (Which are discuss in the previous blog). These are test again to ensure unwanted data to be trap and to make sure all data in paper could be transfer into electronic system accurately.

 How you use the system (User Interface), after putting the system together, will be made in this stage, how will the input gather data and how will the output present the data. If there is a special hardware, it will be necessary to finalise how these devices are used with the system

Testing Stage

As the name of the stage is, this stage is for testing the system that you design. You will test each module in your system. After testing the modules, you test the whole thing. if it fails you go back with Development Stage. The reason to test it whole, after testing each module, is because some data could clash or there could be a issue when working with another file.

Testing will use many different types of data, which will be in one of three

Categories. Normal, Extreme and Abnormal. Let’s use an example : A date (dd/mm/yyyy)

ü  Normal: It is in the range of the type of data. E.g. the month, there will only be in 1-12, that is a whole number.

ü  Extreme: It is the most limits of the range. E.g. the month, the limit in months will be 1 or 12.

ü  Abnormal: it is beyond the range. E.g. The month, which shouldn’t be 13, 0, 1.34, -1.

Implementation Stage

After it works on the Testing Stage, you will have to replace the new version with the old one, but before you implant it, you must train you staff so they can work on the new system and change all the paper based file into the electronic system.

After you finish that, you implant it. There are 4 ways to implant it (Each with a disadvantage and advantage, it can be seen in the table below). Direct Changeover, Parallel Running, Pilot Implementation or Phased Implementation.

Direct Changeover: It is to directly change the whole system overnight or when the system isn’t busy.

  Parallel Running: The old and new system will be there, but the old one will slowly fade away and the new one will eventually take over

  Pilot Implementation: The new system will be placed only in one part of the company. If it proved that it works, it will go to another part of the company.

Phased implementation: The new system will be introduced step by step, when it works satisfactorily the whole system will replace the old one.