Common Criteria and Life Cycle Development

Common Criteria and Life Cycle Development

Question 1

Waterfall model is one of the most well famous lifecycle development models. The basic reason behind its very frequent use is that it is very easy to understand and simple and convenient to use. Each next or succeeding stage in the model must be started only once the previous stage was over. However, it is important to note that the implication of this model is different for organizations of different sizes. Give below are discussed two scenarios where one of the scenario includes a huge organization and the other scenario is regarding a midsized firm. Moreover, it must be noted that the attributes of the system will have a different impact on both the scenarios. However, before exploring the implication of the model on different scenarios it is essential that the general characteristics of the model are discussed.

The waterfall model is planned at once from the top to the bottom. Moreover, during all the stages of the model, it is essential to take into account all the details of the working procedures. This is simply because inefficient and insufficient information may cause various issues in the future. Moreover, the Development process in the model is phased, where this stage is more time consuming then the integration stage. Each stage ends with a very detailed description of the requirements and needs for the next stage (Crnkovic, Chaudron & Larsson, 2006). It must be noted that the Testing phase is to be executed only after the execution of development phase. This is simply because the separate parts are usually not completely functional and working to be tested. The verification of the Requirements can be performed only on the completed and final product.

Whenever, this model is adapted, it is essential that each and every detail is documented carefully where all the different sorts of documents must be kept and maintained that includes user manual, performance records and so forth. This documented information can be used by the employer to train and inform the employees to be able to learn and adapt the working and used of the upgraded and updated system (Bishop, 2003). The waterfall model includes very lost of planning however, shippable dates for the completion of different can be estimated for all sorts of projects.

Some advantages and conveniences offered by the waterfall model will be beneficial for both the huge and the midsized companies discussed in the two scenarios. For instance, if this model is selected then there will be no tight and rigid time frames during the development and the finished product can be completed after a longer period (Bishop, 2003). In other words, both the companies will be able to plan the duration up to their convenience.

The model includes the observation and documentation of even the tiniest of detail, which will result in a final product or system well, complied with the requirements of the two companies (Crnkovic, Chaudron & Larsson, ...