1. CSC 480 Software Engineering
Lecture 1
Intro to SWE

2. Introduction What is Software Engineering? What is the difference?
Computer Science vs. Software Engineering
Software Engineering vs. other engineering
What activities are involved?
CSC Fall 2004
8/18/2004

3. The Essence of SE
The essence of software engineering is to deliver high-quality software products that can meet clients’ requirements at agreed cost and schedule.
CSC Fall 2004
8/18/2004

4. Software Software is not just the programs!
A software system usually consists of
Requirement documents
Design specifications (diagrams, etc)
Programs (code, executables and config data)
Installation and user manuals
CSC Fall 2004
8/18/2004

5. Software Is Soft As described in section 1.2 of your text, SE is
A modeling activity: methodologies
A problem-solving activity: processes and practices
A knowledge acquisition activity: intellectual property
A rational-driven activity: constantly changing req’ts
We will discussed the first two areas in detail with lectures and workshops. It’s important to have the mental set of dealing with the softness of software as reflected in the latter two areas
CSC Fall 2004
8/18/2004

6. The Four P’s The four P’s in software development
People – in different roles working in a team
Product – the working software system and associated artifacts
Process – a set of activities that is performed in a certain order toward a special purpose
Project – a specific instance of building a software product
CSC Fall 2004
8/18/2004

7. Relationships Among the 4 P’s
Project: People performing Processes to produce Product
CSC Fall 2004
8/18/2004

8. A Closer Look at the 4 P’s
CSC Fall 2004
8/18/2004

9. Software Lifecycle Activities
Requirements
Elicitation
Analysis
System
Design
Object
Design
Implemen-
tation
Testing
...and their models
Use Case
Model
Test
Cases ?
Verified By
class....
class...
Source
Code
Implemented By
Solution Domain
Objects
Realized By
Subsystems
Structured By
Application
Domain
Objects
Expressed in Terms Of
CSC Fall 2004
8/18/2004

10. Software Lifecycle Definition
Set of activities and their relationships to each other to support the development of a software system
Typical Lifecycle questions:
Which activities should I select for the software project?
What are the dependencies between activities?
How should I schedule the activities?
CSC Fall 2004
8/18/2004

11. Other Basic SE Concepts
Functional requirements
Nonfunctional requirements
Notation
Method
Methodologies
CSC Fall 2004
8/18/2004

12. Additional Background Info
CSC Fall 2004
8/18/2004

13. Engineering
The profession in which
a knowledge of the mathematical and natural sciences gained by study, experience, and practice
…...
-- Accreditation Board for Engineering and Technology
CSC Fall 2004
8/18/2004

14. Engineering
The profession in which
a knowledge of the mathematical and natural sciences gained by study, experience, and practice
is applied with judgment
to develop ways to utilize, economically, the materials and forces of nature for the benefit of mankind
-- Accreditation Board for Engineering and Technology, 1996
CSC Fall 2004
8/18/2004

15. Software Engineering A discipline which
Applies mathematical and computer sciences
Utilizes (mostly) human intelligence, economically, for the benefit of mankind
Based on greatly wise judgment
CSC Fall 2004
8/18/2004

16. Software Engineering Vs. CS
CS is more on the theoretical side
Theories, methods, etc
Essential knowledge for software engineers
Software Engineering is practical
Applying CS theories and methods
Hopefully, in a formal (NOT ad hoc) way
Don’t just learn Software Engineering. Do it!
CSC Fall 2004
8/18/2004

17. Software Vs. Other Engineering
Software is soft
Mostly human intellectual effort
Need for physical resources (e.g. raw materials) is usually not the first priority
Products are intangible and progress may not be visible
With applications in virtual all industries, previous experience may not be easily adopted
CSC Fall 2004
8/18/2004