Title -:The_Why_What_Who_When_and_How_of_Software_Requirements
Article summary
This article discuss about a requirement elicitation process in the context of why, what, who, when and how. First, elaborating why should be there a requirement elicitation process, secondly what sort of requirements and types need to be defined at various levels, who are the stakeholders and how to get them involved in this process, When the requirement elicitation process should happen during the Software development life cycle and Finally how to analysis, specifying , validate requirements during requirement validation process by using various techniques .
Requirements are what the customers, users and suppliers wants from a system. This needs to be identified and determined based on the available information and agreed by customer and project stakeholders. Based on this what functional requirements must be implemented to support client business needs , what can these requirements do to effectively perform client’s business functions must be determined. Further what those non functional requirements can do to add any value to clients must be determined, since non functional requirements improve the overall user experience ,Moreover what are the limitations in implementing the requirements must be identified by the technical team based on technical limitations, less Return of Investment(ROI) due to changing trends etc.
Business requirements are typically stated in terms of the objectives of the customer or organization requesting the development of the software. User requirements look at the functionality of the software product from the perspectives of the various users of that product. They define what the software has to do in...
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Moreover I found his approach of baseline business requirement first then take that as an input and finalize user requirements and then take that as an input again and finalize non functional requirements is somewhat impractical situation. As per “Software Requirements Memory Jogger” ,(Gottesdiener, 2005), these are parallel activities and it would be more effective if feedback from each of these areas is taken to determine and baseline the requirements rather than considering each as a dependency to complete the other process.
Moreover there were no requirement validation techniques mentioned in the article. Since verification of requirement is absolutely required , this aspect should have addressed further in this article.
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From Ruhling's point of views, the applicable of a requirements contract are both legal and mutually satisfactory, as long as performance is met and buyer's requirements exist, it gives certain protection against price increases, and the possibility of a market predictable.
A work breakdown structure is a key project deliverable that organizes the team 's work into manageable sections. The Project Management Body of Knowledge. defines the work breakdown structure as a "deliverable oriented hierarchical decomposition of the work to be executed by the project team”. Basically the work breakdown structure is something that is put together which defines the scope something that project team can understand. On the other hand, project requirement is kind of a document which tell management, what has to be produced and the exact date of completion. It also is based on responsibility factors. Requirements are the expectations which the product need to fulfill. Requirements are collected from the customer, stakeholders and Sponsor.
The project has to assemble a set of requirements drafted out before hand, which will be used to decide if the overall result meets the satisfactory conclusion. The requirements are split into two categories, the so-called functional that will state what the system will do and the non-functional that will enunciate how the system will do it.
Controlled Requirement Expression (CORE) was developed for the British Aerospace programs while the UK Ministry of Defence was carrying out a requirement analysis (Hull et al., 2010). The fundamental component of the CORE methodology is viewpoints as different users see systems in different ways. There are many different stakeholders involved in a system; using CORE methodology involves finding all the different viewpoints of those stakeholders that have an interest in the system whether it’s a person, role or organisation ext.… (Sommerville and Sawyer, 2000). By organising viewpoints hierarchy it assists experts to read the scope and supports the analysis process. CORE Methodology is extensively used for real time system requirements specification.
Business requirements are gathered in this stage. This stage is the main focus of the project managers and stake holders. It is performed by the senior members of the team with inputs from the customer, the sales department, market surveys and domain experts in the industry. This information is then used to plan the main project approach and to conduct product feasibility study in the economical, operational and technical areas. You identify needs of the software. This is the vital stage, because bad investigation may lead to the project
...e required. Such requirements in a system proves to have costly and time consuming set-up processes and unless the set-up is administered with the correct research and cost drivers, the system will become inadequate and inefficient. If the system can be implemented, the outcomes will be accurate cost allocation, the ability to analyse financial and non-financial data. Availability of this data is imperative to effective decision making and the ability of management to see shortfalls and recover costs and efficiencies.
The team implementing the new system were required to do both functional and systematic requirements thus affecting the implementation of the new system
It is a requirement that every major software development and implementation project includes three key stakeholders. These are enterprise customer, system integrator and software vendors. Most failures of the systems are contributed by these three stakeholders.
A Computer Software Engineer develops software systems to be used by their clients, such as a website used to sell the client’s products. Although software engineers spend the majority of their time programming and testing the software, a key component to the success of a software engineer is the ability to write a thorough Software Requirement Specification (SRS). A SRS documents the requirements and dependencies needed for the software, prior to beginning any programming. Therefore, a Software Engineer must po The SRS is so important because engineers can have a wide scope of clients that they regularly work with.
Once customer requirements have been captured and analyzed, information of customer requirements needs to be translated into functional specifications and design. This activity involves marketing function, product designers and engineers.
Customized approach to provision the “Your Choice Furniture” of net technical requirements, most of the problems they face by the information system to help them solve.
Before beginning the designing of a software system, an architects needs to get the key requirement that affect the important structure of the system. The architectural drivers have great influence on the early design decisions the architect makes. In software architecture there are five major drivers which are as follows: the design purpose, quality attributes, primary functionality, architectural concerns and lastly, constraints. The various drivers listed above have been taken into consideration because the roles are critical to the success of the system being designed.
which parts of the tasks. The author claims that with this approach higher-quality requirements are produced and are faster to produce and easy to verify and validate. This follows a similar phenomena as the definition of use case by Alistair Cockburn , ie use case is what the system does and how it interacts with the user. But tasked based requirement analysis delay splitting the work between the system and the user. In this approach it is considered as a decision to be made later.
Hardware Requirements are the resources that are needed to support an operating system. Microsoft has a set of suggested requirements and minimum requirements available to view on their web page. Direct X version 9 is a requirement for Windows 7 and is an example of a software requirement as well
This law explains the properties which a software development system should have while development of the software. The requirements phase gather the Information which assist in next phase of software engineering (software development). Requirement phase determines all the questions start from W such as after final development where the final product will be use, what type of users use it and what features or services it should provide. It is imperative to continue check and update the requirements up to when the appropriate requirements not finalize. Inadequate, incomplete or irrelative data or information of requirement may generates errors in next development phases of project. The main cause behind erroneous requirement definitions are distinct needs of several users groups and difference among their interest. (santhoshgoud, 2010)