Unit 1 sepm the generic process model
- 1. Subject: Software Engineering & Project Management Topic: Process Trends in Software Engineering Shared By: Ms. K.D. Patil, SRES's SCOE, Kopargaon
- 2. The Process • What is it? • A road map that helps you create a timely, high-quality result, is also called as “Software Process”. • Who does it? • Software engineers, their managers and the people who have requested the software, play a important role in the software process. • Why it is important? • Because it provides stability, control, and organization to an activity. • What are the steps? • The process that you adopt depends on the software you are building. • What is the work product? • Are the programs, documents and the data produced. • How do I ensure that I’ve done it right? • Maturity of software, and quality, timeliness, and long-term viability of the product
- 3. Software Engineering: A Layered Technology
- 4. Software Engineering: A Layered Technology l Any engineering approach must rest on organizational commitment to quality which fosters a continuous process improvement culture. l Process layer as the foundation defines a framework with activities for effective delivery of software engineering technology. Establish the context where products (model, data, report, and forms) are produced, milestone are established, quality is ensured and change is managed. l Method provides technical how-to’
- 6. The Software Process l A process is a collection of activities, actions and tasks that are performed when some work product is to be created. It is not a rigid prescription for how to build computer software. Rather, it is an adaptable approach that enables the people doing the work to pick and choose the appropriate set of work actions and tasks. l Purpose of process is to deliver software in a timely manner and with sufficient quality to satisfy those who have sponsored its creation and those who will use it.
- 7. Activity: Strives to achieve broad objectives. (Communication with stakeholders) Actions: Set of Tasks that produce a major work product.(Architectural Design Model) Tasks: Focus on small but well defined objective that produces a outcome.(Unit Test)
- 8. Five Activities of a Generic Process framework l Communication: communicate with customer to understand objectives and gather requirements l Planning: creates a “map” defines the work by describing the tasks, risks and resources, work products and work schedule. l Modeling: Create a “sketch”, what it looks like architecturally, how the constituent parts fit together and other characteristics. l Construction: code generation and the testing. l Deployment: Delivered to the customer who evaluates the products and provides feedback based on the evaluation.
- 9. l These five framework activities can be used to all software development regardless of the application domain, size of the project, complexity of the efforts etc, though the details will be different in each case. l For many software projects, these framework activities are applied iteratively as a project progresses. Each iteration produces a software increment that provides a subset of overall software features and functionality. Five Activities of a Generic Process framework
- 10. Umbrella Activities l Complement the five process framework activities and help team manage and control progress, quality, change, and risk. l Software project tracking and control: assess progress against the plan and take actions to maintain the schedule. l Risk management: assesses risks that may affect the outcome and quality. l Software quality assurance: defines and conduct activities to ensure quality. l Technical reviews: assesses work products to uncover and remove errors before going to the next activity. l Measurement: define and collects process, project, and product measures to ensure stakeholder’s needs are met. l Software configuration management: manage the effects of change throughout the software process. l Reusability management: defines criteria for work product reuse and establishes mechanism to achieve reusable components. l Work product preparation and production: create work products such as models, documents, logs, forms and lists.
- 11. Process Flow
- 12. Process Flow Linear process flow executes each of the five activities in sequence. An iterative process flow repeats one or more of the activities before proceeding to the next. An evolutionary process flow executes the activities in a circular manner. Each circuit leads to a more complete version of the software. A parallel process flow executes one or more activities in parallel with other activities ( modeling for one aspect of the software in parallel with construction of another aspect of the software.