Software Production 0721330 1 (0721330) First Semester 2011/2012 Dr. Samer Odeh Hanna (PhD) .
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Transcript of Software Production 0721330 1 (0721330) First Semester 2011/2012 Dr. Samer Odeh Hanna (PhD) .
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Software Production 0721330 1
(0721330)First Semester 2011/2012
Dr. Samer Odeh Hanna (PhD)http://philadelphia.edu.jo/academics/shanna
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Software Production 0721330 2
Course Objectives
This course provides students with an overall context in which software systems are developed from the viewpoint of processes that support the development.
Software engineering is described as the set of activities developers engage in to create high-quality products within schedule and budget constraints.
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Software Production 0721330 3
Specific Objectives
Understand the theoretical basis for process improvement efforts.
Compare specific processes
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Software Production 0721330 4
Objectives
ActualCore
Processes
Process ImprovementFrameworks
ProcessModels
MakingThingsBetter
KnowingWhat we
Are doingIn first place
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Software Production 0721330 5
Textbooks
B. Bruegge, A. H. Dutoit, “Object-Oriented Software Engineering Using UML, Patterns, and Java”, Third Edition, Prntice Hall, 2009.
R. Pressman, “Software Engineering, A Practitioner’s Approach” Seventh Edition, McGraw-Hill, 2010.
J. Hunt, “Agile Software Construction”, Springer, 2006.
Notes: First and second textbooks are available at the university library Third is available as a pdf file on the lecturer’s website.
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Software Production 0721330 6
Chapter 1: Introduction
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Software Production 0721330 7
Requirements
Software
What we intend
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Software Production 0721330 8
How it should go
RequirementsAnalysis
Implementation
Design
Testing
Delivery and Installation
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Software Production 0721330 9
Inherent Problems with Software Development
Requirements are complex The client does not know the functional
requirements in advance Requirements may be changing
Technology enablers introduce new possibilities to deal with requirements
Frequent changes are difficult to manage There is more than one software system
New system must be backward compatible with existing system (“legacy system”)
This leads us to software life cycle modeling
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Software Production 0721330 10
Definitions
Software lifecycle modeling: Attempt to deal with complexity and change
Software lifecycle: Set of activities and their relationships to each
other to support the development of a software system
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Software Production 0721330 11
Identifying Software Development Activities
For finding activities and dependencies we can use the same modeling techniques when modeling a system such as creating scenarios, use case models, object identification, drawing class diagrams, activity diagrams
Questions to ask: What is the problem? What is the solution? What are the mechanisms that best implement the
solution? How is the solution constructed? Is the problem solved? Can the customer use the solution? How do we deal with changes that occur during the
development? Are enhancements needed?
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Software Production 0721330 12
Possible Identification of Software Development Activities
Requirements Analysis What is the problem?
System Design What is the solution?
Program DesignWhat are the mechanismsthat best implement thesolution?
Program ImplementationHow is the solutionconstructed?
Testing Is the problem solved?
Delivery Can the customer use the solution?
Maintenance Are enhancements needed?
ProblemDomain
ProblemDomain
ImplementationDomain
ImplementationDomain
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Software Production 0721330 13
Software Development as Application Domain: A Use Case Model
<<include>>
<<include>><<include>>
Client End userDeveloperProject manager
Software development
System developmentProblem definition System operation
Administrator
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Software Production 0721330 14
Systemoperationactivity
Systemdevelopmentactivity
Problemdefinitionactivity
Activity diagram for the same life cycle model
Software development goes through a linear progression of statescalled software development activities
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Software Production 0721330 15
Software Development as Application Domain: Simple Object Model
Object DesignDocument
Requirements AnalysisDocument
Executable system
Problem Statement
Software Development
System DesignDocument
Test Manual
User Manual
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Software Production 0721330 16
What is a process?
A group of homogeneous tasks that are related together in which an outcome can be identified.
People, equipment, input, methods, and environment that work together to produce output.
The set of activities, methods, and practices that are used in the production and evolution of software.
Set of activities, organized in steps, in order to transform users needs into operational software.
Steps, partially ordered, are in interaction and aim to achieve a goal.
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Software Production 0721330 17
Processes, Activities and Tasks Process Group: Consists of Set of Processes Process: Consists of Activities Activity: Consists of sub activities and tasks
ProcessGroup
ProcessGroup
ProcessProcess
ActivityActivity
DevelopmentDevelopment
DesignDesign
TaskTask
DesignDatabase
DesignDatabase
Make aPurchase
Recommendation
Make aPurchase
Recommendation
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Software Production 0721330 18
Object Model of the Software Life Cycle
Process group
Activity
Work Product
Resource
Task
Process
Money
Time
Participant
produces
consumes
Phase
*
*
**
*
Software life cycle
*
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Questions