Agile Waterfall Hybrid Model
A Collaborative Approach
Version 0.1
10-March-2014
REVISION HISTORY
Version Effective Date (DD/MM/YYYY) Brief Description of Change Affected Section(s) Prepared By Reviewed By Approved By
0.1 27-Feb-14 Initial Draft Harshpal Singh
TABLE OF CONTENTS
1 Overview 6
2 Waterfall Model 7
2.1 Advantages of Waterfall Model 7
2.2 Disadvantages of Waterfall Model 7
3 Agile Model 8
3.1 Advantages of Agile Model 8
3.2 Disadvantages of Agile Model 8
4 Collaborative (Hybrid) Model 9
4.1 Advantages of Collaborative Model 10
5 Overview of ACCA Account 11
5.1 What went wrong in Online IR project? And Lessons learnt 11
5.2 Additional best practices in a Hybrid model 12
6 Conclusion 15
LIST OF IMAGES
Figure 1: Waterfall Model 7
Figure 2: Agile Model………………………………………………………………………………………………..8
Figure 3: Collaborative (Hybrid) Model………………………………………………………………………..…..9
Figure 4: Model used by ACCA for Exam Entry project……………………………………………………14
1 Overview
The Waterfall Model has been the ideal choice for software development. In this model, an idea become a usable software in a sequential process that cascade through the stages of Initiation, Analysis, Implementation, Testing and Maintenance. But it has some disadvantages. Agile software development evolved as a solution to the disadvantages of Waterfall model. Instead of a sequential design process, the Agile methodology follows an incremental approach.
When clients/firms who were used to following Waterfall model switched to Agile, the transition brought with it many issues.The reason being inadaptability to a different approach to software development. The end product turned out to be a disaster. A new methodology has thus evolved, combibining the best of both ...
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... team is going to adopt. This requires proper planning. Factors like budget, time, resource utilization, complexity of requirements, etc. should be considered in adopting a software model.
Hybrid model is still in a nascent stage. As more and more companies will adopt it, we will learn more about this concept.
The Agile manifesto asks us to value:
Individuals and interactions over processes and tools
Working software over comprehensive documentation
Customer collaboration over contract negotiation
Responding to change over following a plan
Whereas, the hybrid model does not adhere to it 100 percent. It believes all aspects are important. It is upto the clients/project managers to decide which aspect to value more and which aspect to value less.
References
http://www.wikipedia.org/ http://www.mountaingoatsoftware.com/ http://www.accaglobal.com/gb/en.html
3.) Explain why incremental development is the most effective approach for developing business software systems. Why is this model less appropriate for real-time systems?
Agile project management is an iterative approach to the planning and monitoring of project processes. Agile projects are conducted in smaller tranches called iterations with each of these iterations closely reviewed and critiqued by the project team (employees, representatives of the clients etc.). The knowledge gained from this process is then used to ascertain the next steps of the
Answer: Software changes is inevitable. Change is inevitable in complex systems because of various causes like the requirements gathering, their design, specifications, user requirements etc. All software systems must evolve to meet the ever - expanding needs of its users. Gathering entire requirementsat a single stretch may sometimes be not possible for complex systems. In such cases, the changes are made to the systems after the development. Also, user requirements change from time to time. So to accomplish their requirements, changes are made. Designing complex systems and accomplishing all the needs and requirements is difficult in complex systems. So these are designed and developed with initial requirements and then changes are made to the existing
Customer satisfaction is the important part in agile development and it is found by direct contact with the customers.
They are both very powerful tools for team skill building. When team members can identify with the models and learn to move through each stage successfully, it can set organizational standards to new highs. Every business professional should want to keep a copy of these models on his desk because of the growing dependence of teams in organizations. After all, no one wants to be on the losing team. The ineffective team gives no pleasure or feeling of accomplishment to anyone involved!
Waterfall No. 1 Georgia O’Keefes painting Waterfall No.1 was one of three paintings she devoted to depict a waterfall near the Lao Valley in Hawaii. This one like the rest of them were all done on a white canvas with oil paints. The canvas came about when O’keefe visited Hawaii in 1939 and like the name suggests it is a depiction of a beautiful waterfall. This was new territory for O’keefe when she painted this, as she was most famous for depictions of the arid southwest. The lush tropical sights of Hawaii were a completely opposite compared to her previous pieces.
It is well known that the team work is far better than performing a task individually. Such kind of practice plays a very important role in software engineering. A lot of things can be achieved together with the combination of diversified people, as they input different tactics and skills so that the main objective of a certain mission can be accomplished appropriately. Even though teaming up and working for a project is essential and helpful; there exist some issues that could bring interruptions and conflicts in the team.
Scharff C., Gotel O., and Kulkarni V., " Transitioning to Distributed Development in Students’ Global Software Development Projects: The Role of Agile Methodologies and End-to-End Tooling". in Fifth International Conference on Software Engineering Advances, pp. 388-394, 2010
...takes to set up information in the system. The level of understanding would improve through partaking or getting involved and henceforth could be adapted easily. All the bits and pieces of the project would rapidly increase or grow as per the workflow process. At the end, the overall CPOE system should be able to compare the manual method with the new electronic system and tell which is best and accurate to use and also tell how much time and money will be saved when using either system. At the end of the project the team should be able to come together and discuss whether or not the project met all of the company’s needs such as if it is reliable, efficient, safe and secure and also does it save time and money. Then, if the system has more advantages than disadvantages and it is worth all of the team’s time and effort it would be best to continue with the project.
A software development methodology is a standard proven process which helps programmers, architects, system analysts and others to make a well controlled and an efficient progress in the high quality software development.
The Systems Development Life Cycle (SDLC) consists of phases used in developing a piece of software. It is the plan of how to develop and maintain software, and when necessary, replace that software. In 2007 during my hospital’s transition to a new software system, I was fortunate enough to be included in the process. I did not get involved until the implementation phase, but from then on, until now, I remain very active in the process. I decided to highlight the Waterfall Model of SDLC. The Waterfall Model is a “sequential development process” with each phase continuing in a line (McGonigle and Mastrian, 2012, p. 205).
This paper has the intention to explain what Rational Unified Process (RUP) is like an IBM product and a CASE tool. After is explained what phases it has, what are the most common extensions thus what are its workflows more used. The Rational Unified Process (RUP) is a software design method created by the Rational Software Corporation and now is part of IBM developer software. This paper describes how to deploy software effectively. The Rational Unified Process (RUP) use commercially proven techniques, and is a heavy weight process, and hence particularly applicable to larger software development teams working on large projects.
It is possible to have a singular methodology for project management to specify morality and ethics when dealing with customers. Application of agile project management approaches like Atern offer a more inclusive approach for stakeholders including consistent update and revision of strategies. When the project manager violates protocol, all stakeholders should come together, clarify issues of violation, and set standards for all to follow.
Agile software development is a group of software development methods based on iterative and incremental development, where requirements and solutions evolve through collaboration between self-organizing, cross-functional teams. It promotes adaptive planning, evolutionary development and delivery, a time-boxed iterative approach, and encourages rapid and flexible response to change.
With the continuously increasing business demands and globalization trends organization moving towards the distributed software development as a successful approach for overcoming the budget and time constraints of traditional software development. But With the rise in the globalization of business and the advancement of information and communication technologies, organizations are increasingly adopting distributed software development (DSD) as a strategy to meet the traditional budgetary and time constraints of software projects. With all the benefits of time and cost in DSD, it also has associated challenges of distance and socio-cultural based communication, coordination and control. In recent era researchers have shown interest in integrating agile methods in DSD due to the core principles of agile methodologies i.e., flexibility, continuous emphasis on communication and short iterative development to get satisfied customers to produce quality software products.