Agile Software Development Research Paper Example | Topics and Well Written Essays - 2000 words

Agile Software Development - Research Paper Example Agile accelerates the development process while maintaining the flexibility of adjusting to changing requirements through iterative development (Dingsoyr et al., 2010, p. 33). This report gives an overview of agile method of software development. It presents a brief technical comparison with the traditional, non-iterative waterfall model, the intent and guiding principles for agile methods, the people involved its advantages and disadvantages, two common agile methodologies and lastly the future of agile. 2. Agile vs. Waterfall In contrast to the traditional non-incremental models such as waterfall, agile does not have distinct phases of capturing requirements, forming architecture and design, development, testing and incorporating feedback as shown in Figure 1. Figure 1 Waterfall Model In agile all these phases are meshed up as can be seen in Figure 2. The intent is to develop a feature set in a way the customer wants. A release of the system is built on the initial requirements wit h respect to the features set provided by the customer, the miniature system is then tested by the customer, requirements are revised and readjusted into the release and then the new system release based on some other remaining features is built. Hence, there is only one similarity present between the traditional non-iterative waterfall model and agile model which is with regards to the testing phase. Agile model has a distinct testing phase as well which is a common process in all of the iterations. Generally, the testing phase comprises of two categories of testing; unit testing done from developer’s perspective and acceptance testing carried out from customer’s perspective. ... The difference lies in the fact that in agile, the developers and the customers are in close communication with each other while in waterfall, the case is different. In waterfall, the testing is done as per the set of requirements and design details initially put together in form of documents in the initial phases of the software cycle. Customer involvement is limited to merely the requirements capturing phase. Any change of requirements on part of customer is not guaranteed to be incorporated in the system. Therefore, agile provides a worthwhile alternative to the heavy-weight document-driven software development methodologies such as waterfall. 3. Agile vs. Rapid Application Development Agile is an incremental model similar to Rapid application development (RAD) model (Linger & Fisher, 2004, p. 180). Figure 3 shows the RAD process. In RAD, initial set of requirements are used to design a prototype for customers to test. The prototype helps customers in realizing the system requirem ents as mostly the customers are unaware of what they want. Figure 3 Rapid Application Development In agile, the underlying model is the same as RAD except that the delivery is made in form of releases that contain a subset of features. Unlike prototypes in RAD, these releases are supposed to be complete miniature software fulfilling a portion of the feature set. The customer defines a set of features and provides a brief detail of how the system must offer these features. A release based on a subset of the features is built within a specified interval and is tested for acceptance by the customer. Any changes requested are adjusted through constant cooperation with the

VIVA examination Essay Example | Topics and Well Written Essays - 2500 words

VIVA examination - Essay Example In his statement, the defendant states that he is married and operates a business that employs two individuals. According to the witness statements document 3 and 4 the defendant did not resist arrest and complied with the arresting officers when he was arrested. When the defendant was granted the pre-charge bail, he did not abscond and willingly returned to the police station to be interviewed on the second occasion. From his antecedents it is also evident that the defendant was born in Lymeshire and has a permanent address. The defendant does not have any outstanding bail commitment and has not made attempt to return to The Void. The Bail Act 1976 provides that the court should presume that the defendant should be granted bail unless there are circumstances to justify refusal of bail. Part II of the act provides circumstances when the defendant need not be granted bail. These circumstances include where it is apparent to the court that the defendant failed to surrender to custody in accordance to bail conditions in a previous bail commitment. The court can also refuse to grant bail if it believes that the defendant was on bail when the offence was committed. Additionally, the court need not grant bail if it is satisfied that there are reasons to believe that the defendant would commit a crime while on bail, refuse to commit to custody, interfere with witness or obstruct justice. Furthermore, the court should not grant bail to the defendant if it is satisfied that the defendant should remain in custody for his own protection (Loveless, 2008). From the defendants statement of proof it is apparent that the defendant did not fail to surrender to custody in accordance to the conditions of the pre-charge bail. The defendant was not on bail when the alleged crime was committed. There is no evidence on record or reason to believe that the defendant would commit a crime while on bail. The defendant does not intend to refuse to commit to