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Software QualityAssuranceand Testing

Lecture 4

Software Quality AssuranceSoftware Quality Assurance (SQA)

Plans

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Software Quality Assurance anoverview 2

Outline

Cost of Quality Denitions Purpose of SQA Plan Contents of SQA Plan

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Cost of Quality

Cost of quality --> includes all costs incurred inthe pursuit of quality or perfor quality relatedwor!

Prevention costsinclude quality plannin" foral technical reviews test equipent #rainin"

Internal failure costsinclude rewor! repair failure ode analysis

Software Quality Assurance $#estin" %

External failure costs

are coplaint resolution product return and

replaceent help line support

warranty wor!

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Denitions

Software Quality Assurance &Set of systeatic activities providin"

evidence of the a'ility of the software

process to produce a software product thatis t to use()* Schuleyer and +* ,c,anus Software Quality Handbook Prentice .all

/001*

Quality assurance planis the central aidfor plannin" and chec!in" the qualityassurance*

Software Quality Assurance $#estin"

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Purpose of SQA Plan

#his docuent descri'es the proceduresand control ethods to o'tain the desiredquality level of the end products and the

process 'y which these end products arecreated*

#his docuent serves as a "uide for theana"ers and developers of the pro3ect*

4t should 'e produced very early insoftware developent pro3ect*

4t ay not e5ists as a separate docuent

it could 'e incorporated into pro3ect6sSoftware Quality Assurance $#estin" 7

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Contents of SQA Plan

Software Quality Assurance $#estin" 8

Purpose of PlanReferenceddocuments

ManagementDocumentatio

n

Standards

Practices and!on"entions

Re"iews andAudits

!onfigurationManagement

Pro#lemReporting and

!orrecti"eaction

$ools$ec%ni&ues andMet%odologies

!ode !ontrol Media !ontrol Supplier control

Records!ollection

Maintenanceand Retention

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Purpose

States the specic purpose and scope ofthe SQA plan*

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:eferenced Docuents

A coplete list of the docuentsreferenced in the plan* ;or e*"*

Pro3ect Overview version /*< Pro3ect Plan version /*< Software :equireents Specication 4=== )uide for Software Quality Assurance

Plannin"

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,ana"eent

4=== standard lays down three aspects Or"ani?ation structure

.ierarchy

SQA tas!s Preparin" S:S SQA plan software developent plan Software requireent review

Software test plan Draft support docuents e*"* user anuals etc Desi"n reviews

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,ana"eent Cont6d

:oles and responsi'ilities related to productquality #he pro3ect ana"ers and desi"n@developent

teas have priary responsi'ility for the qualitycontrols*

#he quality ana"er will Dene the responsi'ilities of quality personnel A"ree to quality plan with pro3ect ana"er

Approve the plan of audit :esolves disa"reeent 'etween pro3ect ana"er

and quality personnel :eviews the activities perfored

:eview the contents of quality proceduressoftware standards etc*

Software Quality Assurance $#estin" /