Software encompasses computer programs, data structures, and documentation. It is developed through software engineering processes and methods rather than manufactured. While software doesn't physically deteriorate, it does deteriorate over time due to changes. Software engineering aims to develop software through systematic, disciplined, and quantifiable approaches to achieve reliable and efficient software economically.
Software Requirement Specification is a most important topic asked in exams and for presentations in B.Tech comp. engg. This presentation contains all the important topic and deep knowledge of SRS.It includes definition, scope, role, how to write srs, template and template description. It tells how to build SRS and also includes examples for ease.
Software Requirement Specification is a most important topic asked in exams and for presentations in B.Tech comp. engg. This presentation contains all the important topic and deep knowledge of SRS.It includes definition, scope, role, how to write srs, template and template description. It tells how to build SRS and also includes examples for ease.
It's about software engineering diversity. To build a software at first we fixed our requirements and according to our requirements we have to choose perfect software design and implementation techniques. For different software we have to select different kinds of techniques.
Learn about Agile Methodology of Software Engineering and study concepts like What is Agile, Why Agile is there, Agile Principles, Agile Manifesto with Pros & Cons of it.
Presentation also include Agile Testing Methodology like Scrum, Crystal Methodologies, DSDM, Feature Driven Development, Lean Software Development & Extreme Programming.
If you watch this one please rate it and do share this presentation to others so then can easily learn more about the Agile Methodology.
This Presentation will describe you,
01. What is software project management
02. The Role of Software Project Manager
03. Risk Management
04. People Management
not only these point you will have with example.
PRESCRIPTIVE PROCESS MODEL(SOFTWARE ENGINEERING)IrtazaAfzal3
A prescriptive process model is a model that describes "how to do" according to a certain software process system. ... Prescriptive models are used as guidelines or frameworks to organize and structure how software development activities should be performed, and in what order.
This ppt covers the following topics
Software quality
A framework for product metrics
A product metrics taxonomy
Metrics for the analysis model
Metrics for the design model
Metrics for maintenance
It's about software engineering diversity. To build a software at first we fixed our requirements and according to our requirements we have to choose perfect software design and implementation techniques. For different software we have to select different kinds of techniques.
Learn about Agile Methodology of Software Engineering and study concepts like What is Agile, Why Agile is there, Agile Principles, Agile Manifesto with Pros & Cons of it.
Presentation also include Agile Testing Methodology like Scrum, Crystal Methodologies, DSDM, Feature Driven Development, Lean Software Development & Extreme Programming.
If you watch this one please rate it and do share this presentation to others so then can easily learn more about the Agile Methodology.
This Presentation will describe you,
01. What is software project management
02. The Role of Software Project Manager
03. Risk Management
04. People Management
not only these point you will have with example.
PRESCRIPTIVE PROCESS MODEL(SOFTWARE ENGINEERING)IrtazaAfzal3
A prescriptive process model is a model that describes "how to do" according to a certain software process system. ... Prescriptive models are used as guidelines or frameworks to organize and structure how software development activities should be performed, and in what order.
This ppt covers the following topics
Software quality
A framework for product metrics
A product metrics taxonomy
Metrics for the analysis model
Metrics for the design model
Metrics for maintenance
Introduction to software engineering
Software products
Why Software is Important?
Software costs
Features of Software?
Software Applications
Software—New Categories
Software Engineering
Importance of Software Engineering
Essential attributes / Characteristics of good software
Software Components
Software Process
Five Activities of a Generic Process framework
Relative Costs of Fixing Software Faults
Software Qualities
Software crisis
Software Development Stages/SDLC
What is Software Verification
Advantages of Software Verification
Advantages of Validation
Introduction to software engineering information.
How the concept of the software engineering discover.
Nature of the software with categorization.
Software Crises in software engineering.
Programming practice with the concept of software engineering.
Software Project management practice with the help software engineering.
Design and Patterns concepts also.
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Unlocking Business Potential: Tailored Technology Solutions by Prosigns
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Blockchain Integration: Prosigns offers comprehensive blockchain solutions, including development, integration, and consulting services, enabling businesses to leverage blockchain technology for enhanced security, transparency, and efficiency.
DevOps Services: Prosigns' DevOps services streamline development and operations processes, ensuring faster and more reliable software delivery through automation and continuous integration.
Microsoft Dynamics 365 Support: Prosigns provides comprehensive support and maintenance services for Microsoft Dynamics 365, ensuring your system is always up-to-date, secure, and running smoothly.
Learn how our collaborative approach and dedication to excellence help businesses achieve their goals and stay ahead in today's digital landscape. From concept to deployment, Prosigns is your trusted partner for transforming ideas into reality and unlocking the full potential of your business.
Join us on a journey of innovation and growth. Let's partner for success with Prosigns.
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Chapter_01.ppt
1. What is Software?
Software encompasses: (1) instructions (computer programs)
that when executed provide desired features, function, and
performance; (2) data structures that enable the programs to
adequately store and manipulate information and (3)
documentation that describes the operation and use of the
programs.
2. Software products
Generic products
◦ Stand-alone systems that are marketed and sold to any customer who wishes to buy
them.
◦ Examples – PC software such as editing, graphics programs, project management
tools; CAD software; software for specific markets such as appointments systems for
dentists.
Customized products
◦ Software that is commissioned by a specific customer to meet their own needs.
◦ Examples – embedded control systems, air traffic control software, traffic
monitoring systems.
3. Why Software is Important?
The economies of ALL developed nations are dependent on software.
More and more systems are software controlled ( transportation, medical,
telecommunications, military, industrial, entertainment,)
Software engineering is concerned with theories, methods and tools for
professional software development.
4. Software costs
Software costs often dominate computer system costs. The costs of software
on a PC are often greater than the hardware cost.
Software costs more to maintain than it does to develop. For systems with a
long life, maintenance costs may be several times development costs.
Software engineering is concerned with cost-effective software development.
5. Features of Software?
Its characteristics that make it different from other things human being
build.
Features of such logical system:
Software is developed or engineered, it is not manufactured in the classical
sense which has quality problem.
Software doesn't "wear out.” but it deteriorates (due to change).
Although the industry is moving toward component-based construction,
most software continues to be custom-built. Modern reusable components
encapsulate data and processing into software parts to be reused by
different programs. E.g. graphical user interface, window, pull-down menus
in library etc.
7. Software Applications
1. System software: such as compilers, editors, file management utilities
2. Application software: stand-alone programs for specific needs.
3. Engineering/scientific software: Characterized by “number crunching”algorithms. such
as automotive stress analysis, molecular biology, orbital dynamics etc
4. Embedded software resides within a product or system. (key pad control of a microwave
oven, digital function of dashboard display in a car)
5. Product-line software focus on a limited marketplace to address mass consumer market.
(word processing, graphics, database management)
6. WebApps (Web applications) network centric software.
7. AI software uses non-numerical algorithm to solve complex problem. Robotics, expert
system, pattern recognition game playing
8. Software—New Categories
Open world computing—pervasive, ubiquitous, distributed computing due to
wireless networking. How to allow mobile devices, personal computer, enterprise
system to communicate across vast network.
Open source—”free” source code open to the computing community (a blessing,
but also a potential curse!)
◦ Data mining
◦ Grid computing
◦ Cognitive machines
◦ Software for nanotechnologies
9. The IEEE definition:
Software Engineering: (1) The application of a systematic,
disciplined, quantifiable approach to the development,
operation, and maintenance of software; that is, the
application of engineering to software. (2) The study of
approaches as in (1).
[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.
Software Engineering Definition
10. Importance of Software Engineering
More and more, individuals and society rely on advanced software systems.
We need to be able to produce reliable and trustworthy systems economically
and quickly.
It is usually cheaper, in the long run, to use software engineering methods and
techniques for software systems rather than just write the programs as if it
was a personal programming project. For most types of system, the majority of
costs are the costs of changing the software after it has gone into use.
12. A Layered Technology
Software Engineering
Any engineering approach must rest on organizational commitment to quality which
fosters a continuous process improvement culture.
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.
Method provides technical how-to’s for building software. It encompasses many
tasks including communication, requirement analysis, design modeling, program
construction, testing and support.
Tools provide automated or semi-automated support for the process and methods.
13. Software Process
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.
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.
14. Five Activities of a Generic
Process framework
Communication: Before any technical work can commence, it is critically
important to communicate and collaborate with the customer (and other
stakeholders).
◦ The intent is to understand stakeholders’ objectives for the project and
◦ to gather requirements that help define software features and functions.
Planning: A software project is a complicated journey, and the planning
activity creates a “map” that helps guide the team as it makes the journey.
The map—called a software project Plan
◦ defines the software engineering work by describing
◦ the technical tasks to be conducted, the risks that are likely, the resources that
will be required, the work products to be produced, and a work schedule.
15. Five Activities of a Generic
Process framework
Modeling: what it will look like architecturally,
◦ how the constituent parts fit together, and many other characteristics.
A software engineer does the same thing by creating models to better
understand software requirements and the design that will achieve
those requirements.
Construction: This activity combines code generation and the testing
that is required to uncover errors in the code.
Deployment: Delivered to the customer who evaluates the products and
provides feedback based on the evaluation.
16. Umbrella Activities
Complement the five process framework activities and help team
manage and control progress, quality, change, and risk.
Software project tracking and control: assess progress against the plan
and take actions to maintain the schedule.
Risk management: assesses risks that may affect the outcome and
quality.
Software quality assurance: defines and conduct activities to ensure
quality.
Technical reviews: assesses work products to uncover and remove
errors before going to the next activity.
17. Umbrella Activities
Software configuration management: manage the effects of change
throughout the software process.
Reusability management: defines criteria for work product reuse and
establishes mechanism to achieve reusable components.
Work product preparation and production: create work products such
as models, documents, logs, forms and lists.
18. Adapting a Process Model
The process should be agile and adaptable to problems. Process adopted for
one project might be significantly different than a process adopted from
another project. (to the problem, the project, the team, organizational
culture). Among the differences are:
◦the overall flow of activities, actions, and tasks and the interdependencies
among them
◦the degree to which actions and tasks are defined within each framework
activity
19. Adapting a Process Model
◦the degree to which work products are identified and required
◦the manner which quality assurance activities are applied
◦the manner in which project tracking and control activities are applied
◦the overall degree of detail and rigor with which the process is described
◦the degree to which the customer and other stakeholders are involved with
the project
◦the level of autonomy given to the software team
◦the degree to which team organization and roles are prescribed
20. Prescriptive and Agile
Process Models
◦The prescriptive process models stress detailed definition, identification,
and application of process activates and tasks.
◦Intent is to improve system quality, make projects more manageable, make
delivery dates and costs more predictable, and guide teams of software
engineers as they perform the work required to build a system.
21. Prescriptive and Agile
Process Models
◦Agile process models emphasize project “agility” and follow a set of
principles that lead to a more informal approach to software process. It
emphasizes maneuverability and adaptability. It is particularly useful when
Web applications are engineered.
22. Hooker’s General Principles for Software
Engineering Practice: important underlying law
Help you establish mind-set for solid software engineering practice (David
Hooker 96).
1: The Reason It All Exists: provide values to users
2: KISS (Keep It Simple, Stupid! As simple as possible)
3: Maintain the Vision (otherwise, incompatible design)
4: What You Produce, Others Will Consume (code with concern for those that
must maintain and extend the system)
5: Be Open to the Future (never design yourself into a corner as specification
and hardware changes)
6: Plan Ahead for Reuse
7: Think! Place clear complete thought before action produces better results.
23. Software Myths
Erroneous beliefs about software and the process that is used to build
it.
Affect managers, customers (and other non-technical stakeholders)
and practitioners
Are believable because they often have elements of truth,
but …
Invariably lead to bad decisions,
therefore …
Insist on reality as you navigate your way through software
engineering
24. Software Myths Examples
Myth 1: Once we write the program and get it to work, our job is done.
Reality: the sooner you begin writing code, the longer it will take you to get
done. 60% to 80% of all efforts are spent after software is delivered to the
customer for the first time.
Myth 2: Until I get the program running, I have no way of assessing its quality.
Reality: technical review are a quality filter that can be used to find certain
classes of software defects from the inception of a project.
25. Software Myths Examples
Myth 3: software engineering will make us create voluminous and unnecessary
documentation and will invariably slow us down.
Reality: it is not about creating documents. It is about creating a quality product.
Better quality leads to a reduced rework. Reduced work results in faster delivery
times.
Many people recognize the fallacy of the myths. Regrettably,
habitual attitudes and methods foster poor management and
technical practices, even when reality dictates a better approach.
26. How It all Starts
◦ Every software project is precipitated by some business need—
◦ the need to correct a defect in an existing application;
◦ the need to extend the functions and features of an existing
application, or
◦ the need to create a new product, service, or system.