Slides chapter 17
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The document discusses planning and formulation for web engineering projects. It covers identifying business needs, defining objectives and features, gathering requirements through stakeholder communication, defining user categories and use cases, analyzing gathered information, and outlining roles for a web engineering team. Project differences like outsourcing versus in-house development and planning considerations are also addressed.
Slides chapter 17
- 1. Chapter 17 Formulation and Planning for Web Engineering Software Engineering: A Practitioner’s Approach, 6th edition by Roger S. Pressman
- 2. Formulation begins with the identification of business need moves into a description of WebApp objectives defines major features and functions establishes a requirements gathering activity that will lead to the development of an analysis model allows stakeholders and the web engineering team to establish a common set of goals and objectives for the construction of the WebApp. identifies the scope of the development effort provides a means for determining a successful, outcome..
- 3. Formulation Questions What is the main motivation (business need) for the WebApp? What are the objectives that the WebApp must fulfill? Who will use the WebApp? Answers provide … Informational goals—indicate an intention to provide specific content and/or information for the end-user Applicative goals—indicate the ability to perform some task within the WebApp
- 4. WebE Requirements Gathering Ask stakeholders to define user categories and develop descriptions for each category Communicate with stakeholders to define basic WebApp requirements Analyze information gathered and use information to follow-up with stakeholders Define use-cases (Chapter 8) that describe interaction scenarios for each user class
- 5. Defining User Categories What is the user’s overall objective when using the WebApp? What is the user’s background and sophistication relative to the content and functionality of the WebApp? How will the use arrive at the WebApp? What generic WebApp characteristics does the user like/dislike?
- 6. Communicating with Stakeholders Traditional focus groups—a trained moderator meets with a small group of representative end-users (or internal stakeholders playing the role of end-users). Electronic focus groups—a moderated electronic discussion conducted with a group of representative end-users and stakeholders. Iterative surveys—a series of brief surveys, addressed to representative users and requesting answers to specific questions about the WebApp Exploratory surveys—a Web-based survey that is tied to one or more WebApps that have users who are similar to the ones that will use the WebApp to be developed. Scenario-building—selected user are asked to create informal use-cases that describe specific interactions with the WebApp.
- 7. Preliminary Analysis Categorize information gathered by user class and transaction type Develop lists of … content objects operations that are applied to content objects within a specific user transaction functions (e.g., informational, computational, logical, and help-oriented) that the WebApp provides for end-users other non-functional requirements that are noted during the communication activities.
- 8. Use-Cases Provide the detail necessary to create an effective analysis model Help the developer to understand how users perceive their interaction with the WebApp Use-cases help to compartmentalize Web engineering work Use-cases provide important guidance for those who must test the WebApp
- 9. The WebE Team WebE team roles Content Developer/Providers Web Publisher Web Engineer. Business domain experts Support Specialist Administrator (a.k.a. “Web Master”)
- 12. WebApp Outsourcing - I Initiate the project by performing the following tasks internally Gather requirements Develop a “rough design” Develop a rough schedule with delivery dates Consider increments Make a list of responsibilities For in-house staff For outsourcing vendor Define liaison mechanisms
- 13. WebApp Outsourcing - II Select Candidate Outsourcing Vendors Assess the Validity of Price Quotes and the Reliability of Estimates Does the quoted cost of the WebApp provide a direct or indirect return-on-investment that justifies the project? Does the vendor that has provided the quote exhibit the professionalism and experience we require? Understand the Degree of Project Management You Can Expect/Perform Assess the Development Schedule Manage Scope
- 14. WebApp Planning - In-House Understand scope, the dimensions of change, and project constraints Define an incremental project strategy Perform risk analysis Develop a quick estimate Select a task set (process description) Establish a schedule Define project tracking mechanisms Establish a change management approach
- 15. WebE “Worst Practices” We have a great idea, so lets begin building the WebApp—now. Stuff will change constantly, so there’s no point in trying to understand WebApp requirements. Developers whose dominant experience has been in traditional software development can develop WebApps immediately. No new training is required. Be bureaucratic. Testing? Why bother?