Post on 15-Jan-2016
transcript
April 21, 20231
April 21, 2023April 21, 2023 Azusa, CAAzusa, CA
Sheldon X. Liang Ph. D.
Software Engineering Software Engineering in CS in CS at at APUAPU
Azusa Pacific University, Azusa, CA 91702, Tel: (800) 825-5278 Department of Computer Science, http://www.apu.edu/clas/computerscience/
CS 470 Software Engineering ICS 470 Software Engineering I
April 21, 20232
Azusa Pacific University, Azusa, CA 91702, Tel: (800) 825-5278 Department of Computer Science, http://www.apu.edu/clas/computerscience/
Software Engineering Software Engineering in CS in CS at at APUAPU
CS 470 Prescriptive Process ModelsCS 470 Prescriptive Process Models
April 21, 20233
Azusa Pacific University, Azusa, CA 91702, Tel: (800) 825-5278 Department of Computer Science, http://www.apu.edu/clas/computerscience/
Software Engineering Software Engineering in CS in CS at at APUAPU
CS 470 Prescriptive Process ModelsCS 470 Prescriptive Process Models
Prescriptive Models• Prescriptive process models advocate an orderly approach to
software engineering
That leads to a few questions …
• If prescriptive process models strive for structure and order, are they inappropriate for a software world that thrives on change?
• Yet, if we reject traditional process models (and the order they imply) and replace them with something less structured, do we make it impossible to achieve coordination and coherence in software work?
April 21, 20234
Azusa Pacific University, Azusa, CA 91702, Tel: (800) 825-5278 Department of Computer Science, http://www.apu.edu/clas/computerscience/
Software Engineering Software Engineering in CS in CS at at APUAPU
CS 470 Prescriptive Process ModelsCS 470 Prescriptive Process Models
The Waterfall Model
CommunicationPlanning
ModelingConstruction
Deploymentanalysisdesign code
test
project initiationrequirement gathering estimating
schedulingtracking
deliverysupportfeedback
April 21, 20235
Azusa Pacific University, Azusa, CA 91702, Tel: (800) 825-5278 Department of Computer Science, http://www.apu.edu/clas/computerscience/
Software Engineering Software Engineering in CS in CS at at APUAPU
CS 470 Prescriptive Process ModelsCS 470 Prescriptive Process ModelsThe Incremental Model
CommunicationPlanning Modeling Construction Deployment delivery feedbackanalysisdesign codetest
increment # 1
increment # 2
delivery of1st increment
delivery of2nd increment
delivery ofnth increment
increment # n
project calendar time
CommunicationPlanning Modeling Construction Deployment delivery feedbackanalysisdesign codetest
CommunicationPlanning Modeling Construction Deployment delivery feedbackanalysisdesign codetest
April 21, 20236
Azusa Pacific University, Azusa, CA 91702, Tel: (800) 825-5278 Department of Computer Science, http://www.apu.edu/clas/computerscience/
Software Engineering Software Engineering in CS in CS at at APUAPU
CS 470 Prescriptive Process ModelsCS 470 Prescriptive Process Models
The RAD Model
Communication
Planning
Modelingbusiness modelingdata modelingprocess modeling
Constructioncomponent reuseautomatic code generationtesting
Deployment
60 - 90 days
Team # 1
Modelingbusiness modelingdata modelingprocess modeling
Constructioncomponent reuseautomatic code generationtesting
Modelingbusiness modelingdata modelingprocess modeling
Constructioncomponent reuseautomatic code generationtesting
Team # 2
Team # n
integrationdeliveryfeedback
April 21, 20237
Azusa Pacific University, Azusa, CA 91702, Tel: (800) 825-5278 Department of Computer Science, http://www.apu.edu/clas/computerscience/
Software Engineering Software Engineering in CS in CS at at APUAPU
CS 470 Prescriptive Process ModelsCS 470 Prescriptive Process ModelsEvolutionary Models: Prototyping
Communication
Quick plan
Constructionofprototype
Modeling Quick design
Delivery& Feedback
Deployment
communication
Quickplan
ModelingQuick design
Constructionof prototype
Deploymentdelivery &feedback
April 21, 20238
Azusa Pacific University, Azusa, CA 91702, Tel: (800) 825-5278 Department of Computer Science, http://www.apu.edu/clas/computerscience/
Software Engineering Software Engineering in CS in CS at at APUAPU
CS 470 Prescriptive Process ModelsCS 470 Prescriptive Process Models
Evolutionary Models: The Spiral
communication
planning
modeling
constructiondeployment delivery feedback
start
analysisdesign
codetest
estimationschedulingrisk analysis
April 21, 20239
Azusa Pacific University, Azusa, CA 91702, Tel: (800) 825-5278 Department of Computer Science, http://www.apu.edu/clas/computerscience/
Software Engineering Software Engineering in CS in CS at at APUAPU
CS 470 Prescriptive Process ModelsCS 470 Prescriptive Process ModelsEvolutionary Models: Concurrent
Under review
B as elined
Done
Under
revis ion
A w ait ing
c hanges
Under
developm ent
none
Modeling ac t iv it y
represents the stateof a software engineeringactivity or task
April 21, 202310
Azusa Pacific University, Azusa, CA 91702, Tel: (800) 825-5278 Department of Computer Science, http://www.apu.edu/clas/computerscience/
Software Engineering Software Engineering in CS in CS at at APUAPU
CS 470 Prescriptive Process ModelsCS 470 Prescriptive Process Models
Still Other Process Models
• Component based development—the process to apply when reuse is a development objective
• Formal methods—emphasizes the mathematical specification of requirements
• AOSD—provides a process and methodological approach for defining, specifying, designing, and constructing aspects
• Unified Process—a “use-case driven, architecture-centric, iterative and incremental” software process closely aligned with the Unified Modeling Language (UML)
April 21, 202311
Azusa Pacific University, Azusa, CA 91702, Tel: (800) 825-5278 Department of Computer Science, http://www.apu.edu/clas/computerscience/
Software Engineering Software Engineering in CS in CS at at APUAPU
CS 470 Prescriptive Process ModelsCS 470 Prescriptive Process Models
The Unified Process (UP)
software incrementRelease
Inception
Elaboration
construction
transition
production
April 21, 202312
Azusa Pacific University, Azusa, CA 91702, Tel: (800) 825-5278 Department of Computer Science, http://www.apu.edu/clas/computerscience/
Software Engineering Software Engineering in CS in CS at at APUAPU
CS 470 Prescriptive Process ModelsCS 470 Prescriptive Process Models
Inception Elaboration Construction Transition Production
UP Phases
Workflows
Requirements
Analysis
Design
Implementation
Test
Iterations #1 #2 #n-1 #n
Support
UP Phases
April 21, 202313
Azusa Pacific University, Azusa, CA 91702, Tel: (800) 825-5278 Department of Computer Science, http://www.apu.edu/clas/computerscience/
Software Engineering Software Engineering in CS in CS at at APUAPU
CS 470 Prescriptive Process ModelsCS 470 Prescriptive Process ModelsUP Work Products
Inception phase
Elaboration phase
Construction phase
Transition phase
Vision documentInitial use-case modelInitial project glossaryInitial business caseInitial risk assessment.Project plan, phases and iterations.Business model, if necessary.One or more prototypesInception
Use-case modelSupplementary requirements including non-functionalAnalysis modelSoftware architecture Description.Executable architectural prototype.Preliminary design modelRevised risk listProject plan including iteration plan adapted workflows milestones technical work productsPreliminary user manual
Design modelSoftware componentsIntegrated software incrementTest plan and procedureTest casesSupport documentation user manuals installation manuals description of current increment
Delivered software incrementBeta test reportsGeneral user feedback
Thank you very much!
Questions?
April 21, 202314
Azusa Pacific University, Azusa, CA 91702, Tel: (800) 825-5278 Department of Computer Science, http://www.apu.edu/clas/computerscience/
Software Engineering Software Engineering in CS in CS at at APUAPU
CS 470 Prescriptive Process ModelsCS 470 Prescriptive Process Models