1. Chapter 1 Introduction

2. Overview Objectives FAQs about software engineering
Ethical and professional issues
SW engineering vs. Systems Analysis
Course Syllabus

3. Objectives
Introduce what software engineering is and why it is important
Understand ethical and professional issues that are important for software engineers
Understand the relation between this course and the systems analysis and design
View of topics to be discussed this course

4. Class Activity: Technology and us
With your team write down a list of everyday devices we use that contain software?

5. Software development crises
Projects were:
Late
Over budget
Unreliable
Difficult to maintain
Performed poorly

6. Software errors... the cost
Errors in computer software can have devastating effects

7. CNN: Computer glitch delays dozens of UK flights
Saturday 3rd October 2009-London, England (CNN)
Dozens of flights from the UK were delayed Saturday after a glitch in an air traffic control system in Scotland, but the problem was fixed a few hours later.
The agency said it reverted to backup equipment as engineering worked on the system.
The problem did not create a safety issue but could cause delays in flights.
Read more at

8. Loss of the Mars Climate orbiter in 1999 because an error in a Metric to English conversion formula (pounds and Kilograms)[1]

9. Ariane 5 Explosion Caused by an overflow error.
Watch the video

10. Therefore..
A well-disciplined approach to software development and management is necessary. This is called engineering.

11. Software engineering
The notion of software engineering was first proposed in 1968.

12. FAQs about software engineering

13. What is software?
Software is a product that software engineers design and build
It encompasses programs, documents, and data

14. What is Software Engineering?
“An engineering discipline that is concerned with all aspects of software production from the early stages of system specification to maintaining the system after it has gone into use” [4]

15. Software Types There are two types of software products
Generic products
Customized or bespoke products

16. What is the difference between software engineering and computer science?
Theory and fundamentals
Software engineering
Practicalities of delivering useful software
Software engineers need computer science knowledge

17. What is the difference between software engineering and system engineering?
Hardware + Software + Process
Older than software engineering
Software engineering is part of system engineering

18. What is a Software Process?
Set of activities and associated results that produce a software product.
There are four fundamental activities common to all software process models
SW specification:
What does the customer need “Requirements”?
What are the constraints?
SW development
Design & programming
SW validation:
Checking whether it meets requirements
SW evolution :
Modifications (e.g. customer/market)

19. What is a Software Process Model?
A simplified description of a SW process that presents one view of that process
Examples of process perspectives are
Workflow perspective
Sequence of activities: Human Actions
What is input, output, and dependencies
Data-flow perspective - information flow;
Activities = transformations of information
How the input is transformed into output
Role/action perspective
What is the role of people step of the process?

20. What is a Software Process Model?

21. What are the costs of SW engineering?
No simple answer, depends on :
The process used, and
The type of software being developed
Each generic approach has a different profile of cost distribution.
Roughly 60% of costs are development costs, 40% are testing costs.
For custom software, evolution costs often exceed development costs.

22. Software engineering activity cost distribution

23. What are software engineering methods?
Structured approaches to software development which include system models, notations, rules, design advice and process guidance.
Model descriptions
Descriptions of graphical models which should be produced;
Rules
Constraints applied to system models;
Recommendations
Advice on good design practice;
Process guidance
What activities to follow.

24. What is CASE? CASE (Computer Aided Software Engineering)
Programs used to support software process activities such as system modeling, debugging, and testing
Some CASE tools include automatic code generation from diagrams.

25. What are the attributes of good software?
Some essential attributes :

26. Activity
What are the key attributes for..

27. What are the key challenges facing software engineering?

28. Professional and Ethical responsibility
Please read from the book section 1.2 pages 14-17

29. SW engineering vs. Systems Analysis
What you studied in System Analysis course constitutes part of software engineering.
Software Engineering is a broader subject.
To be a software engineer, you must master several skills, one of which is analysis and design.

30. SW Engineering vs. Systems Analysis and Design

31. Syllabus

32. References
PRESS&SUN-BULLETIN, The Binghamton Press Co., Binghamton, NY, October 1,1999.
“Software Hell: Is there a way out?”, BUSINESS WEEK, December 6, 1999.
IEEE Standards Collection: Software Engineering, IEEE standard , IEEE 1993.
Sommerville, Ian “Software Engineering”, 8th edition, Addison-Wesley.