1-3 What is Software Engineering
Summary
TLDRThis video script delves into the realm of software engineering, defining it as the application of scientific principles to design and build software systems. It emphasizes the importance of systematic, disciplined, and quantifiable approaches in software development, drawing parallels with traditional engineering disciplines. The script highlights the intangible nature of software, the inevitability of change, and the necessity for adaptability and evolution in software products. It also distinguishes between software engineering and computer science, underscoring the practical focus of the former in solving real-world problems. The video outlines the software development lifecycle, from concept exploration to retirement, and discusses various development models, techniques, and tools that software engineers can employ to meet project requirements and constraints.
Takeaways
- đ§ Software engineering is the application of systematic, disciplined, and quantifiable approaches to the development, operation, and maintenance of software.
- đ The definition of software engineering from IEEE includes the application of engineering to software and the study of approaches to software development.
- đ ïž Software can be categorized into various types such as operating systems, drivers, embedded systems, compilers, and applications, each with its own constraints and development needs.
- đ Software is often classified under commercial, open source, shareware, and freeware, reflecting different user bases and sizes.
- đ€ Engineering involves developing solutions that are effective and efficient, considering the context of the project and selecting the right approach for the situation.
- đĄ Knowledge in software engineering brings theories and solutions, but not all solutions are applicable to every project's context.
- đ Software changes are inevitable, and software engineering includes the flexibility to accommodate these changes effectively and efficiently.
- đïž Software engineering is based on three fundamental pillars: scientific support from computer science, a mathematical foundation from discrete math, and a problem-solving approach from data structures and algorithms.
- 𧩠The difference between software engineering and computer science lies in the focus on practical software production versus theoretical understanding of computing.
- đ Software engineering encompasses the entire lifecycle of software development, from concept exploration to retirement, involving various stages and activities.
Q & A
What is the definition of software engineering according to the script?
-Software engineering is the use of scientific principles to design and build software to achieve a goal. It involves a systematic, disciplined, and quantifiable approach to the development, operation, and maintenance of software.
How does the script define a systematic approach in software engineering?
-A systematic approach in software engineering means that the process is organized and efficient, with a focus on following a structured method to achieve the desired outcome.
What does it mean for an approach in software engineering to be 'disciplined'?
-A disciplined approach in software engineering refers to the controlled nature of the process, ensuring that the development follows established standards and practices.
Why is it important for software engineering approaches to be 'quantifiable'?
-Quantifiable approaches in software engineering allow for the measurement and analysis of the development process, which is essential for studying and improving the efficiency and effectiveness of the software development.
How does the script categorize different types of software?
-The script categorizes software into operating systems, drivers, embedded systems, compilers, applications (like desktop, web, mobile, database, media, games), and further classifies them under commercial, open source, shareware, and freeware.
What is the role of knowledge in software engineering as per the script?
-Knowledge in software engineering brings theories and solutions to the table, but it's also the engineer's job to develop the best solutions for the specific context of a project, which may not always be directly applicable from existing knowledge.
How does the script differentiate between software engineering and other kinds of engineering?
-The script highlights that a significant difference is that software is not tangible, and changes can be made even after the software is written, unlike physical structures like bridges where changes are much more challenging.
What are the three fundamental pillars of any engineering discipline according to the script?
-The three fundamental pillars of any engineering discipline are scientific support provided by science, a mathematical foundation provided by math, and a problem-solving approach.
How does the script describe the relationship between computer science and software engineering?
-The script explains that computer science is concerned with the theories and methods behind computers and software, while software engineering is concerned with the practical problems of producing software. Some knowledge of computer science is essential for software engineers, but the theory is often more applicable to smaller programs.
What are the stages of the software development life cycle mentioned in the script?
-The script mentions stages such as concept exploration, requirements, design, construction, testing, installation, operation, maintenance, and retirement as part of the software development life cycle.
Why is it important for software engineers to understand the context of their situation or problem?
-Understanding the context of a situation or problem is crucial for software engineers to pick the right solution and apply the most appropriate techniques and tools for their specific project's needs.
Outlines
đ» Introduction to Software Engineering
This paragraph introduces the concept of software engineering, defining it as the application of scientific principles to design and build software with specific goals in mind. It emphasizes the systematic, disciplined, and quantifiable nature of the field, drawing from the IEEE definition. The paragraph discusses the various types of software, such as operating systems, drivers, embedded systems, compilers, and applications, and how they can be categorized under commercial, open source, shareware, and freeware. It also touches on the challenges software engineers face, such as the intangible nature of software and the need for effective and efficient solutions. The importance of knowledge in providing theories and solutions is highlighted, along with the need for software engineers to understand their project's context to select the appropriate solution. The paragraph concludes by discussing the flexibility in software engineering and the evolution of software over time, using Microsoft Word as an example of continuous development.
đ ïž The Software Development Lifecycle
Paragraph 2 delves into the software development lifecycle, detailing the various stages from concept exploration to retirement. It explains that software engineering is applied throughout the entire lifecycle, not just during development. The paragraph outlines the key stages: requirements, design, construction, testing, installation, operation, maintenance, and retirement. It also discusses the different software development models and the various techniques and tools available for each stage. The importance of choosing the right mix of models, techniques, and tools based on the project's context, circumstances, and constraints is emphasized. The paragraph concludes by stating that software engineering encompasses everything needed to produce successful software that can evolve to meet changing customer needs.
Mindmap
Keywords
đĄSoftware Engineering
đĄSystematic
đĄDisciplined
đĄQuantifiable
đĄCommercial Software
đĄOpen Source
đĄMaintainability
đĄReliability
đĄComputer Science
đĄSoftware Development Models
đĄRetirement
Highlights
Software engineering is defined as the application of systematic, disciplined, and quantifiable approaches to the development, operation, and maintenance of software.
Software engineering aims to design and build software to achieve specific goals using scientific principles.
The IEEE definition of software engineering emphasizes the application of engineering to software and the study of approaches to software development.
Approaches to building software should be systematic, disciplined, and quantifiable to ensure organization, efficiency, and measurability.
Software can be categorized into various types such as operating systems, drivers, embedded systems, compilers, and applications.
Software can be classified under commercial, open source, shareware, and freeware, each with its constraints, user base, and size.
Engineering involves developing the best solutions for a given context, being both effective and efficient.
Software engineers must understand the context of their situation or problem to pick the right solution.
Software engineering provides techniques for completing everyday tasks and predicting project costs and schedules.
Software engineering includes the challenge of managing intangible work and customer expectations for changes.
Software is built to evolve, and successful applications often continue to evolve long after the initial release.
Software engineering is based on three fundamental pillars: scientific support, mathematical foundation, and problem-solving approach.
The difference between software engineering and computer science lies in the focus on practical software production versus theoretical computer concepts.
Software engineering encompasses all steps from a vague idea to a powerful and intuitive solution that meets changing customer needs.
The stages of software development include concept exploration, requirements, design, construction, testing, installation, operation, maintenance, and retirement.
Software engineering is applied throughout the software's lifecycle, not just during development.
Different software development models exist, each with its techniques and tools, providing various possibilities for software development.
Transcripts
what is software
engineering hello everyone and Welcome
to our software engineering
series the definition of engineering is
the use of scientific principles to
design and build machines structures and
other items to achieve a goal therefore
software engineering uses scientific
principles to design and build software
to achieve a goal the software
engineering definition from i e is
software engineering one the application
of a systematic disciplined quantifiable
approach to the development operation
and maintenance of software that is the
application of engineering to
software two the study of approaches as
in one i e
6110.1 12-9
so there are many approaches to build
software each of them should be
systematic which means organized and
efficient disciplined which means
controlled quantifiable which means
measurable as we have to study each of
those approaches to know which approach
to apply to our specific situation there
are many ways to categorize software
operating systems drivers embedded
systems compilers applications like
desktop web mobile database media games
and more all these can be classified
under commercial open source shareware
and freeware each type of software has
its constraints user base and size
that's why it needs a particular way of
development knowledge brings theories
and solutions to the table however in
engineering not all solutions are
necessarily available or applicable to
your Project's context this is why
engineering's job to develop the best
solutions to the situation while being
effective and efficient and your job as
a software engineer is to understand the
context of your situation or problem and
pick the right solution
accordingly again don't limit yourself
to the current problems you face with
your company there will be a time when
you face different problems and you need
to be equipped with the right weapons to
attack those
problems software engineering exists to
help the software engineer
too use powerful and well accepted
techniques for completing everyday tasks
among
projects accurately predict cost and
schedule to complete our projects build
desirable characteristics in our
products like maintainability
reliability Etc one of the significant
differences between software engineering
and most other kinds of engineering is
that software is not tangible your
customer will not see the efforts done
during designing coding and testing the
software you might work for weeks
building the software's foundation that
the customer can't visually experience
that is why it seems to everyone that
it's easy to make changes to any
software part even after it is entirely
written you will hear me say many times
that software changes are inevitable in
software on the other side if you wait
until a bridge is finished and then ask
your structural engineer to add to extra
Lanes there's a good chance that
somebody will jump from that
bridge software engineering includes
more flexibility than many other fields
of engineering which increases
challenges software is built to evolve
actually successful applications often
continue to evolve long after the
initial release Microsoft Word for
example has been evolving for roughly 30
years we want such evolvement to be as
effective and efficient as possible Ive
means we want to achieve our goal and
efficient means we want it to happen
smoothly with the minimum effort minimum
cost and time any engineering discipline
is based on three fundamental
pillars one scientific support provided
by science two a mathematical Foundation
provided by math and three a problem
solving approach in software engineering
the scientific background comes from
computer science the math found
foundations come from discrete math and
the problem solving approach comes from
data structures algorithms Etc many of
you may ask about the difference between
software engineering and computer
science here's my answer to this eternal
question computer science is concered
with the theories and methods behind
computers hardware and software software
engineering is concerned with the
Practical problems of producing software
some knowledge of computer science is
essential for software Engineers
computer science theory however is often
more applicable to relatively small
programs computer science is rarely
relevant to large complex problems that
require a software solution software
engineering is everything you need to do
to produce successful software it
includes the steps that start with a
vague idea and turn it into a powerful
and intuitive solution that can be
enhanced to meet changing customer needs
for years to come stay pages of software
development could be concept exploration
an area where one would like to position
the product requirements design and
construction part of the standard
development phase testing installation
and checkout part of the system
validation process operation and
maintenance involve deploying the
product at customer sites and entering
the maintenance process by handling
customer issues and Performing
enhancement and fixes when needed
retirement phasing out the product and
introducing a newer one in its place
software engineering is applied not only
during software development but also
until the software's
retirement such stages are linked
together in many different ways
resulting in different software
development models within each stage the
software engineer performs different
activities again there are many
different ways to perform such tasks
resulting in different techniques each
activity can be done using different
tools the different models techniques
and tools provide us with many
possibilities to develop the software
our job here is to learn all our chances
to choose the right mix according to our
project context circumstances and
constraints
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