Software Engineering and Project Management

Course PPT for SEPM

1. Software Engineering and Project Management SVCE, Bangalore Presented by Dr Mukesh Kumar Singh 08/05/2024.

2. Introduction The evolving role of software The changing nature of software Software engineering Lets learn one by one . Module-1

3. The evolving role of software A B “ Ideas and technological discoveries are the driving engines of economic growth.” The old-school view of software—you buy it, you own it, and it’s your job to manage it. To be contd. To be contd. Module-1.1, Introduction

4. The changing nature of software A B Software is both a product and a vehicle that delivers a product. Today, a huge software industry has become a dominant factor in the economies of the industrialized world To be contd. To be contd. Module-1.2, Introduction

5. The changing nature of software Module-1.2, Introduction Why does it take so long to get software finished? Why are development costs so high? Why can’t we find all errors before we give the software to our customers? Why do we spend so much time and effort maintaining existing programs? Why do we continue to have difficulty in measuring progress as software is being developed and maintained?

6. Software is: Instructions (computer programs) that when executed provide desired features, function, and performance; Data structures that enable the programs to adequately manipulate information, and Descriptive information in both hard copy and virtual forms that describes the operation and use of the programs. How should we define software? Module-1.2, Introduction The changing nature of software

7. Software is developed or engineered; it is not manufactured in the classical sense. Module-1.2, Introduction The changing nature of software

8. Software doesn’t “wear out.” Module-1.2, Introduction The changing nature of software

9. Although the industry is moving toward component-based construction, most software continues to be custom built. Software application domain System software Application software Engineering/scientific software Embedded software Product-line software Web applications Artificial intelligence software Module-1.2, Introduction The changing nature of software

10. It follows that a concerted effort should be made to understand the problem before a software solution is developed. It follows that design becomes a pivotal activity. It follows that software should exhibit high quality software in all of its forms and across all of its application domains should be engineered. Module-1.3, Introduction Software engineering

11. Software engineering is the establishment and use of sound engineering principles in order to obtain economically software that is reliable and works efficiently on real machines. Module-1.3, Introduction Software engineering

12. Software Engineering Definition : The application of a systematic, disciplined, quantifiable approach to the development, operation, and maintenance of software. that is, the application of engineering to software and the study of approaches as in same. Module-1.3, Introduction Software engineering

13. Module-1.3, Introduction Software engineering layers

14. The software process forms the basis for management control of software projects and establishes the context in which technical methods are applied. Software engineering methods provide the technical how- to’s for building software. Software engineering tools provide automated or semiautomated support for the process and the methods. Module-1.3, Introduction Software engineering layers

15. A process is a collection of activities, actions, and tasks that are performed when some work product is to be created. A Process Framework 1. Communication Before any technical work can commence, it is critically important to communicate and collaborate with the customer. Module-1.4, Introduction Software engineering process

16. A Process Framework 2. Planning A “map” that helps guide the team as it makes the journey. 3. Modeling A software engineer does the same thing by creating models to better understand software requirements and the design that will achieve those requirements. Module-1.4, Introduction Software engineering process

17. A Process Framework 4. Construction This activity combines code generation (either manual or automated) and the testing. 5. Deployment The software (as a complete entity or as a partially completed increment) is delivered to the customer who evaluates the delivered product and provides feedback based on the evaluation. Module-1.4, Introduction Software engineering process

18. A Process Framework 4. Construction This activity combines code generation (either manual or automated) and the testing. 5. Deployment The software (as a complete entity or as a partially completed increment) is delivered to the customer who evaluates the delivered product and provides feedback based on the evaluation. Module-1.4, Introduction Software engineering process

19. A Generic Process Model consists of : communication, planning, modeling, construction, and deployment. Module-1.5, Introduction A Generic Process Model

20. Module-1.5, Introduction A Generic Process Model

21. Module-1.5, Defining a Framework Activity

22. Module-1.5, Defining a Framework Activity

23. Module-1.5, Defining a Framework Activity

24. A Generic Process Patterns are as follow : Pattern Name Forces Type--Stage pattern (Establishing Communication), Task pattern (Requirements Gathering), Phase pattern (Prototyping). Module-1, Introduction A Process Patterns

25. Module-1, Prescriptive models The Waterfall Model

26. Module-1, Prescriptive models The V-model

27. Module-1, Prescriptive models The Incremental Process Models

28. Module-1, Prescriptive models The Evolutionary Process Models ---- Prototyping.

29. Module-1, Prescriptive models The Evolutionary Process Models ---- The Spiral Model .

30. Module-1, Concurrent Process Model

31. Module-1, Specialized Process Model Component-Based Development The Formal Methods Model Aspect-Oriented Software Development

32. Example of Communication In the pic ? Example of planning In the pic ? Example of Modeling In the pic ? Example of Construction In the pic ? Example of Deployment In the pic ? Module-1, What We have Learn ?

33. Module-1, What We have Learn ? Example of Communication In the pic ? Example of planning In the pic ? Example of Modeling In the pic ? Example of Construction In the pic ? Example of Deployment In the pic ?

34. Requirements Engineering Task 1. Inception How does a software project get started? 2. Elicitation: objectives for the system or product are Problems of scope Problems of understanding Problems of volatility 3 . Elaboration 4. Negotiation 5. Specification 6. Validation Module-2, Requirements Engineering Task

35. Establishing the ground work 1. Identifying Stakeholders anyone who benefits in a direct or indirect way 2. Recognizing Multiple Viewpoints 3. Working toward Collaboration 4. Asking the First Questions Module-2, Establishing the ground work

36. Establishing the ground work .4. Asking the First Questions How would you characterize “good” output that would be generated by a successful solution? • What problem(s) will this solution address? • Can you show me (or describe) the business environment in which the solution will be used? • Will special performance issues or constraints affect the way the solution is approached Module-2, Establishing the ground work

37. Eliciting Requirements .1. Collaborative Requirements Gathering Meetings are conducted and attended by both software engineers and other stakeholders . • Rules for preparation and participation are established. • An agenda is suggested that is formal enough to cover all important points but informal enough to encourage the free flow of ideas . Module-2, Eliciting Requirements

38. Eliciting Requirements • A “facilitator” (can be a customer, a developer, or an outsider) controls the meeting. • A “definition mechanism” (can be work sheets, flip charts, or wall stickers or an electronic bulletin board, chat room, or virtual forum) is used Module-2, Eliciting Requirements

39. Eliciting Requirements .1. Quality Function Deployment Normal requirements Expected requirements Exciting requirements Module-2, Eliciting Requirements

40. Developing Use Cases Who is the primary actor, the secondary actor(s)? • What are the actor’s goals? • What preconditions should exist before the story begins? • What main tasks or functions are performed by the actor? • What exceptions might be considered as the story is described? • What variations in the actor’s interaction are possible? Module-2

41. Developing Use Cases What system information will the actor acquire, produce, or change? • Will the actor have to inform the system about changes in the external environment? • What information does the actor desire from the system? • Does the actor wish to be informed about unexpected changes? Module-2

42. Building the analysis model 1. Elements of the Requirements Model 2. Scenario-based elements 3. Class-based elements 4. Behavioral elements Module-2

43. Building the analysis model Module-2

44. Negotiating Requirements, Validating Requirements, Software Requirement Document Module-2

45. Requirements Modeling Scenarios, Information and Analysis classes: Module-2

46. Requirements Modeling Scenarios, Information and Analysis classes: Module-2

47. Module-2

48. Module-2 Access camera surveillance via the Internet—display camera views (ACS-DCV) 1. The homeowner logs onto the SafeHome Products website. 2. The homeowner enters his or her user ID. 3. The homeowner enters two passwords (each at least eight characters in length). 4. The system displays all major function buttons. 5. The homeowner selects the “surveillance” from the major function buttons. 6. The homeowner selects “pick a camera.”

49. Module-2 Access camera surveillance via the Internet—display camera views (ACS-DCV) 7. The system displays the floor plan of the house. 8. The homeowner selects a camera icon from the floor plan. 9. The homeowner selects the “view” button. 10. The system displays a viewing window that is identified by the camera ID. 11. The system displays video output within the viewing window at one frame per second

50. Module-2

51. UML models that supplement the Use Case: Unified Modeling Language a. Developing an Activity Diagram Module-2

52. UML models that supplement the Use Case: Unified Modeling Language a. Swimlane Diagrams Module-2

53. Data modeling Concepts Data Attributes Module-2

54. Class based modeling External entities (e.g., other systems, devices, people) that produce or consume information to be used by a computer-based system Things (e.g., reports, displays, letters, signals) that are part of the information domain for the problem . Occurrences or events (e.g., a property transfer or the completion of a series of robot movements) Roles (e.g., manager, engineer, salesperson) played by people who interact with the system . Module-2

55. Class based modeling Organizational units (e.g., division, group, team) that are relevant to an application. Places (e.g., manufacturing floor or loading dock) that establish the context of the problem and the overall function of the system. Structures (e.g., sensors, four-wheeled vehicles, or computers) that define a class of objects or related classes of objects. Module-2

56. Module-2

57. Module-2

58. Class-Responsibility-Collaborator (CRC) Modeling Module-2

59. Module-2

60. Module-2

61. What is Agility? It is essential that the process be designed in a way that allows the project team to adapt tasks and to streamline them. Module-3

62. What is Agility?

63. Agility and the cost of change Module-3

64. Module-3 What is an agile Process? It is difficult to predict in advance which software requirements will persist and which will change. For many types of software, design and construction are interleaved. Analysis, design, construction, and testing are not as predictable.

65. Module-3 Agility Principles 1. Our highest priority is to satisfy the customer through early and continuous delivery of valuable software. 2. Welcome changing requirements, even late in development. Agile processes harness change for the customer’s competitive advantage. 3. Deliver working software frequently, from a couple of weeks to a couple of months, with a preference to the shorter timescale. 4. Business people and developers must work together daily throughout the project .

66. Module-3 Agility Principles 5. Build projects around motivated individuals. Give them the environment and support they need, and trust them to get the job done. 6. The most efficient and effective method of conveying information to and within a development team is face-to-face conversation. 7. Working software is the primary measure of progress. 8. Agile processes promote sustainable development. The sponsors, developers, and users should be able to maintain a constant pace indefinitely

67. Module-3 Agility Principles 9 . Continuous attention to technical excellence and good design enhances agility. 10. Simplicity—the art of maximizing the amount of work not done—is essential. 11. The best architectures, requirements, and designs emerge from self– organizing teams. 12. At regular intervals, the team reflects on how to become more effective, then tunes and adjusts its behavior accordingly

68. Module-3 The XP Process Extreme Programming

69. Module-3 The XP Process Industrial Programming Readiness assessment Project community Project chartering Test-driven management Continuous learning

70. Module-3 The Other Agile Process Models Adaptive Software Development (ASD)

71. Module-3 The Other Agile Process Models SCRUM

72. Module-3 The Other Agile Process Models Dynamic Systems Development Method (DSDM) Feasibility study Business study Functional model iteration Design and build iteration Implementation

73. Module-3 The Other Agile Process Models Feature Driven Development (FDD)

74. Module-3 The Other Agile Process Models Feature Driven Development (FDD) <action><- ing > a(n) <object>

75. Module-3 The Other Agile Process Models Lean Software Development (LSD) The lean principles that inspire the LSD process can be summarized as: eliminate waste, build quality in, create knowledge, defer commitment, deliver fast, respect people, and optimize the whole.

76. Module-3 The Other Agile Process Models Agile Modeling (AM) Model with a purpose. Use multiple models. Content is more important than representation. Know the models and the tools you use to create them. Adapt locally

77. Module-3 The Other Agile Process Models Agile Unified Process (AUP) Modeling Implementation Testing Deployment Configuration and project management Environment management

78. Module-3 A tool set for Agile process Acquiring the right people (hiring), Team collaboration, Stakeholder communication, and indirect management are key elements in virtually all agile process models, “tools” that address these issues are critical success factors for agility

79. Module-3 Software Engineering Knowledge : Java, Perl, html, C, Linux If someone assigns you to write a program in C, you have to know something about C to get your program to work.

80. Module-3 Core principles : Principles That Guide Process Principle 1. Be agile Principle 2. Focus on quality at every step Principle 3. Be ready to adapt Principle 4. Build an effective team Principle 5. Establish mechanisms for communication and coordination

81. Module-3 Core principles : Principles That Guide Process Principle 6. Manage change Principle 7. Assess risk Principle 8. Create work products that provide value for others

82. Module-3 Principles That Guide Practice : Principle 1. Divide and conquer Principle 2. Understand the use of abstraction Principle 3. Strive for consistency Principle 4. Focus on the transfer of information From a database to an end user, from a legacy system to a WebApp, from an end user into a graphic user interface (GUI), from an operating system to an application, from one software component to another—the list is almost endless

83. Module-3 Principles That Guide Practice : Principle 5. Build software that exhibits effective modularity . Principle 6. Look for patterns Principle 7. When possible, represent the problem and its solution from a number of different perspectives. Principle 8. Remember that someone will maintain the software

84. Module-3 Principles That guide each framework activity Communication Principles Principle 1. Listen Principle 2. Prepare before you communicate Principle 3. Someone should facilitate the activity Principle 4. Face-to-face communication is best Principle 5. Take notes and document decisions Principle 6. Strive for collaboration Principle 7. Stay focused; modularize your discussion

85. Module-3 Principles That guide each framework activity Communication Principles Principle 8. If something is unclear, draw a picture Principle 9. (a) Once you agree to something, move on. (b) If you can’t agree to something, move on. (c) If a feature or function is unclear and cannot be clarified at the moment, move on. Principle 10. Negotiation is not a contest or a game. It works best when both parties win.

86. Module-3 Principles That guide each framework activity Planning Principles Principle 1. Understand the scope of the project Principle 2. Involve stakeholders in the planning activity. Principle 3. Recognize that planning is iterative Principle 4. Estimate based on what you know Principle 5. Consider risk as you define the plan Principle 6. Be realistic Principle 7. Adjust granularity as you define the plan.

87. Module-3 Principles That guide each framework activity Planning Principles Principle 8. Define how you intend to ensure quality. Principle 9. Describe how you intend to accommodate change Principle 10. Track the plan frequently and make adjustments as required .

88. Module-3 Principles That guide each framework activity Modeling Principles Principle 1. The primary goal of the software team is to build software, not create mo dels. Principle 2. Travel light—don’t create more models than you need. Principle 3. Strive to produce the simplest model that will describe the problem or the software. Principle 4. Build models in a way that makes them amenable to change .

89. Module-3 Principles That guide each framework activity Modeling Principles Principle 5. Be able to state an explicit purpose for each model that is created. Principle 6. Adapt the models you develop to the system at hand. Principle 7. Try to build useful models, but forget about building perfect models. Principle 8. Don’t become dogmatic about the syntax of the model. If it communicates content successfully, representation is secondary

90. Module-3 Principles That guide each framework activity Modeling Principles Principle 9. If your instincts tell you a model isn’t right even though it seems okay on paper, you probably have reason to be concerned. Principle 10. Get feedback as soon as you can

91. Module-3 Principles That guide each framework activity Requirements modeling principles Principle 1. The information domain of a problem must be represented and understood. Principle 2. The functions that the software performs must be defined. Principle 3. The behavior of the software (as a consequence of external events) must be represented. Principle 4. The models that depict information, function, and behavior must be partitioned in a manner that uncovers detail in a layered (or hierarchical) fashion.

92. Module-3 Principles That guide each framework activity Design Modeling Principles Principle 1. Design should be traceable to the requirements model. Principle 2. Always consider the architecture of the system to be built. Principle 3. Design of data is as important as design of processing functions. Principle 4. Interfaces (both internal and external) must be designed with care.

93. Module-3 Principles That guide each framework activity Design Modeling Principles Principle 5. User interface design should be tuned to the needs of the end user. However, in every case, it should stress ease of use. Principle 6. Component-level design should be functionally independent. Principle 7. Components should be loosely coupled to one another and to the external environment. Principle 8. Design representations (models) should be easily understandable

94. Module-3 Principles That guide each framework activity Coding Principles Preparation principles: Before you write one line of code, be sure you • Understand of the problem you’re trying to solve. • Understand basic design principles and concepts. • Pick a programming language that meets the needs of the software to be built and the environment in which it will operate. • Select a programming environment that provides tools that will make your work easier. • Create a set of unit tests that will be applied once the component you code is completed.

95. Module-3 Principles That guide each framework activity Coding Principles Programming principles: As you begin writing code, be sure you • Constrain your algorithms by following structured programming practice. • Consider the use of pair programming. • Select data structures that will meet the needs of the design. • Understand the software architecture and create interfaces that are consistent with it. • Keep conditional logic as simple as possible. • Create nested loops in a way that makes them easily testable. • Select meaningful variable names and follow other local coding standards.

96. Module-3 Principles That guide each framework activity Coding Principles Validation Principles: After you’ve completed your first coding pass, be sure you • Conduct a code walkthrough when appropriate. • Perform unit tests and correct errors you’ve uncovered. • Refactor the code.

97. Module-3 Principles That guide each framework activity Testing Principles. • Testing is a process of executing a program with the intent of finding an error. • A good test case is one that has a high probability of finding an as-yet undiscovered error. • A successful test is one that uncovers an as-yet-undiscovered error.

98. Module-4 Introduction to Project Management: Why software project management important ? What is a project

99. Module-4 Introduction to Project Management: Plans, Methods and Methodologies:

100. Module-4 Introduction to Project Management: Activities covered by software project management

101. Module-4 Introduction to Project Management: Activities covered by software project management

102. Module-4 Introduction to Project Management: Some ways of categorizing software projects

103. Module-4 Introduction to Project Management: Some ways of categorizing software projects