Hi Hung, I am not sure if I am the best person to ask this question. Once other quality factor of traceability is that you don’t have any loops, i.e. You can easily describe traceability because of this. where did this requirement come from e.g. Instead of establishing strict schedules and tasks, all of the time within the Agile methodology is time-boxed in several phases known as sprints. I’ll state my position here – I think waterfall methods as I have known them are not as good as the agile type projects I have seen in the last few years. Your best bet is to google for some. Agile offers an incredibly flexible design model, promoting adaptive planning and evolutionary development. It becomes a bit of a pain. I am not sure how this relates to a Traceability Matrix . So the total number of requirements that should have test-cases are the sum of all those that have test-cases already and those requirements that do not have any dependants yet, so should have test-cases. It’s a risk for some, and one of the reasons is lack of traceability. https://drive.google.com/file/d/0B8_XO-CxRaqqREdXTC1sQWpuX0k/view.
I wrote already about in: http://scn.sap.com/community/asap-methodology/blog/2012/10/14/i-am-sure-agile-is-not-for-big-sap-erp-implementations-part-ii. Really, when it comes to choosing a method there is not a right or wrong choice. As a result, additional sprints might have to be added, increasing the projects initially projected cost. We use cookies to ensure that we give you the best experience possible on our website. A contains C and D so when we count A as TBD then we are essentially counting C and D again. Thank you. In the case of the Agile method, however, development is much more person based. It’s easier to get an accurate measure of progress since the entire scope of the project is known beforehand. The Waterfall methodology employs a linear approach to the development of software. Not sure if you are ASUG member, but if you are keep your eyes peeled for the invite in the next few days.

See this document below Rather, designers are free to respond to changes in requirements as they arise and make changes as the project progresses.

“The spiral model is mostly used in large projects. Your email address will not be published.

RFP or customer change request.

In Psoda the row is automatically coloured rose to highlight that this requirement has no derivatives for it. In the image above you can easily see that SEC_03 has no derived requirements. Please note that often the stakeholders (key users) of ERP implementation are not available in sufficient extent. They may find the “make and try” approach as the symptom of weak product or weak consultants! During the entire development process, it’s easier to have several members of the overall team involved in other work simultaneously. When implementing this approach, developers can expect the sequence of steps to appear something like the following: In the truest form of the Waterfall methodology, each of the aforementioned steps represents a specific pace within software development. Since the design is finished early along in the development process, the Waterfall approach is perfect for projects that require the design of several software components to eventually be integrated into external systems. We have thousands of people working in sync following common takt. Though highly flexible, Agile simply doesn’t have the structure that the Waterfall method has and this does present some drawbacks. Waterfall methodology is like a complex record keeping methodology.

To start with, can you give me a few high-level business requirements for the system…, hello bruce…nice article…i am working on a research project (master thesis) which requires finding diffrent quality demands, quality attributes and metrics on user requirements to ensure high quality requirements…could you provide me some information about the quality attributes and metrics(boundary values) for the quality demand requirements should be traceable..thanx. Many components like BO, CRM and so on became independent and may be fully independently implemented as parts of big business landscape.

In addition, the problem with the Waterfall method is that feedback and testing are deferred until very late into the project. Agile and Waterfall are two distinct methods of software development. In fact they are so bizarre – in my experience – I would argue you need user input all along the way just to make sure you know what in the world it is they really want. I was provocative in the article to start the discussion, but in fact I agree 100% with your last expression. There are many differences between agile and waterfall, but the major ones lie in the details. As I stated previously you as a consultant or customer have choice to make – traditional or agile approach. If your requirements live in different documents as I described earlier you’d end up having to make a checklist of all the high-level requirements and then go through each of the detailed requirements and tick of all of the high-level requirements that have detailed requirements defined for them. I also notice that above you stress the accounting nature of ERP projects. We will have set of three sessions in the next 2 months with ASUG that will focus on explaining the ins and outs of the methodology in more detail. To show that requirement SEC_01.1 is derived from requirement SEC_01 you do the following: Of course requirements cannot be derived from themselves so the diagonal of the matrix is blacked out. I am presenting only doubts and objections (I will not name this as “criticism”) about use of Agile by big ERP implementation – especially new ones. Essentially the only process involved here is editing the data to update the Employee table. I understood what a traceability matrix does and why it is used. Agile projects tend to be hard to predict, from timelines to budgets.

Agile, with its seductive personality, drugged you into thinking about it and nothing or nobody else.
You may have to refer to your thesis advisor in this case. For example to find any requirements that do not have test-cases derived yet you just find rows with no arrows underneath the test-cases in the matrix. In the image above the test-cases are identified with a TC_ prefix. Like its name suggests, waterfall employs a sequential design process. If it’s not possible to complete all of the planned work before the sprint ends, work has to be reprioritized and adjustments are made accordingly moving forward. If a designer leaves in the midst of a Waterfall method development project, it likely won’t be too big of a deal as the project is plan based. While coding is being completed, testers are able to test different scripts. We did a VERY waterfall one, and whilst it worked well, it took forever, and then after go-live we had to go back and change a fair bit. The Waterfall model can essentially be described as a linear model of software design. Maybe an update of the link will help us see what you are referring to with the diagram. On the mechanics of the project – you start your Agile project traditionally Project Prep, Lean Blueprint, then you swith to iterative build in Realization (with option to split the project into multiple releases should the customer want to enable set of capabilities first before enabling the rest – think of Global ASAP approach with template versions – this is very similar) and then switch back to traditional approach for integration testing, UAT, Cutover and Operations. Your customer will change their mind about some of the high-level requirements half-way through the project. Every development methodology has it’s pros and cons. But updating the derived requirements may impact other requirements, designs, test-cases, etc. It is the ability to verify the history, location, or application of an item by means of documented recorded identification. The project manager have to justify what is right to particular purpose – no one of them is perfect tool for all situations.

With this strategy, we succeed in being iterative without giving up on the architecture of our system. Like its name suggests, waterfall employs a sequential design process. It is now very easy to see which items still need to be updated due to a change in scope.

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