1
Processes and Process Models
Lecture # 5
docsity.com
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Guidelines and tips
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Processes and Process Models-Software Requirement-Lecture Slides, Slides of Software Project Management
This course includes types of requirements, modeling of non functional, static and dynamic modelling, requirement elicitation and use case modeling. This lecture includes: Examples, Processes, Software, Engineering, Development, Change, Management, Design
Typology: Slides
2011/2012
1 / 24
This page cannot be seen from the preview
Don't miss anything!
Related documents
Partial preview of the text
Download Processes and Process Models-Software Requirement-Lecture Slides and more Slides Software Project Management in PDF only on Docsity!
1
Processes and Process Models
Lecture # 5
2
Process - 1
•^
A process is an organized set ofactivities, which transforms inputs tooutputs
-^
We can use synonyms of process suchas: procedure, method, course ofaction, etc.
-^
Processes are essential for dealingwith complexity in real world
4
Examples of Processes - 1
-^
An instruction manual for operating amicrowave oven
-^
An instruction manual for assembling acomputer or its parts
-^
A procedure manual for operating a motorvehicle radio and CD player
5
Examples of Processes - 2
•^
A quality manual for softwaredevelopment.Such a manual describes theprocesses, which should be used toassure the quality of the software
7
Software Processes
•^
Requires creativity
-^
Provides interactions between a widerange of different people
-^
Helps in engineering judgment
-^
Requires background knowledge
8
Examples of Software Processes•
Software engineering developmentprocess (SDLC)
-^
Requirements engineering process
-^
Design process
-^
Quality assurance process
-^
Change management process
10
Process Models
•^
A process model is a simplifieddescription of a process presentedfrom a particular perspective
-^
There may be several different modelsof the same process
-^
No single model gives a completeunderstanding of the process beingmodeled
11
Variations in Process Models
-^
A process model is produced on theanticipated need for that model. We mayneed–
A model to help explain how processinformation has been organized
-^
A model to help understand and improve aprocess
-^
A model to satisfy some quality managementstandard
13
Coarse-grain Activity Model
•^
This type of model provides an overallpicture of the process
-^
Describes the context of differentactivities in the process
-^
It doesn’t document how to enact aprocess
14
Context of Requirements
Engineering
•^
Software requirements follow the“system requirements” and “systemdesign”
-^
The primary goal is understanding
-^
Software requirements are followedby software design in a softwaredevelopment life cycle
16
Another Perspective on Context
of RE Process
System acquisition
Requirements engineering
System design
17
Coarse-grain Activity Model ofthe Requirements Engineering
Process
•^
Requirements engineering process isan example of coarse-grain activitymodel
19
Spiral Model of RE Process
Informal statement of
requirements Draft requirements
document
Requirementsdocument andvalidation report
Agreed requirements
START
Requirementelicitation
Requirement analysis
and negotiation
Requirementvalidation
Requirementdocumentation
20
Fine-grain Activity Models
•^
These are more detailed models of aspecific process, which are used forunderstanding and improving existingprocesses
-^
We’ll discuss some fine-grainprocesses within the generalrequirements engineering processes inlater lectures