Transcript
Software Engineering: what is that?
Henry Muccini henry.muccini@univaq.it
SEA Group
The material in these slides may be freely reproduced
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preserved.
Henry Muccini
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Welcome to the Software Engineering Course
Software Engineering: what is that?
o how it relates to previous courses?
o What «Software Engineering» means?
Course Objective
Course plan
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WELCOME
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Henry Muccini, Ph.D.Prof. in Computer ScienceInternational aspects
My Research in Software Engineering:
o Software Architecture
o Software Testing
o Model Driven Engineeering
o Mobile Computing
Teaching:
o Software Engineering
o Software Architecture
o Progettazione UML per il Web (MWT)
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Tell me something about you
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Phrase of the day
� Take Notes, Take Notes, Take Notes
� You are not anymore used to take notes!!
� Most of the material comes from experience, not from
books
� Ask questions, Ask questions, Ask questions
� That is the main way to interact
� This is not high school
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SOFTWARE ENGINEERING:
WHAT IS THAT?
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Algorithms
Operating
systems
Data
Structures
Programming
Languages
DatabasesComputer
Architecture
Math
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Let us put the pieces together, on…
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Discussion:
On the relationship between SE
and Computer Science
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There is much more:
http://www.boeing.com/commercial/aeromagazine/a
ero_05/textonly/ps02txt.html#table1
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discussion
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There are 100s definitions!!!
“Application of a systematic, disciplined, quantifiable
approach to the development, operation, and
maintenance of software; that is, the application of
engineering to software” (IEEE 1990)
“The application of a systematic, disciplined,
quantifiable approach to the development, operation,
and maintenance of software, and the study of these
approaches; that is, the application of engineering to
software” (Wikipedia)
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Set of automated methods
to systematically develop quality software
that fulfils customer needs
while satisfying existing constraints
discussion
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o The final Software doesn´t fulfill
the needs of the customer
o Hard to extend and improve:
if you want to add a functionality
later is mission impossible
o Bad documentation
o Bad quality: frequent errors, hard
to use, ...
o More time and costs than
expected
o Social aspects of teamwork
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o It does what expected by the customer/user +
o It implements the «wanted» qualities +
o It satisfies existing constrains +
o It can be easily revised, extended, evolved …
o … and more!
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discussion
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Therac-25 safety failure:
•approximately 100 times the intended dose of
radiation
•3 people died, and 6 got injured
see article at: http://sunnyday.mit.edu/papers/therac.pdf
Factors:
•Overconfidence in
Software
•Confusing reliability
with safety
•Lack of defensive Design
•Failure to eliminate
fault causes
•Inadequate software
engineering practices
•…
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http://www.devtopics.com/20-famous-software-disasters/
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Field of computer science dealing with software systems
that are:
• large and complex =complex? large?
• built by teams =people!, communication, …
• exist in many versions =version control
• last many years =engineered to be sustainable
• Undergo changes =evolves
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Requirements/User
stories
Software Design
Implementation
Testing
Maintenance
Sw
Process
Quality
Assurance
Human
Aspects
Activities
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Preface @ «Object-Oriented Software Engineering –
using UML, Patterns, and Java», by Bernd Bruegge and
Allen H. Dutoit
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COURSE ORGANIZATION
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Lectures
Labs
Projects
Exams
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Software Design (with the UML)
Requirements Engineering (with the UML)
(RUP and Agile) Software Development Process
Software Testing
Collaboration&Communication
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Sw Design
Introduction
UML for sw Design
Sw Requirements
Requirements Elicitation
UML for Sw Requirements
Software Process
RUP vs Agile
Software Testing
Black box, white box
Collaboration and Communication
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Course Web Site
CODE:
C44F3-XV3JT
https://app.schoology.com/course/383003107/
https://goo.gl/sV211p
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Bernd Bruegge, Allen H. Dutoit
Object-Oriented Software
Engineering: Using UML,
Patterns and Java, 3rd Edition
Publisher: Prentice Hall, Upper
Saddle River, NJ, 2009;
ISBN-10: 0136061257
ISBN-13: 978-0136061250
Additional readings will be added during the lectures.
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Practical projects covering the material
discussed in class
Ora examination
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