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SoftwareEngineering

UsmanFarooq

sf_usman@

Goal(s)ofthislecture

TounderstandrequirementsengineeringprocessofSoftwareCompany‘Mitco’businesssolutions.RequirementsElicitationRequirementsAnalysisandNegotiationRequirementsDocumentRequirementsValidation2

CaseStudyIntroduction

Theaimofthiscasestudyistopracticallyobserveandexamineprocessofrequirementsengineeringinindustry.MitcoBusinessSolutionswasestablishedin1996ThegoalwastoprovidecompleteandintegratedTechnologysolutionstoorganizationsataffordableprices.Ithasafast-paced,successorientedworkenvironmentfueledbythetalent,skillsandexpertiseofemployeeswhoareamongthebestintheindustry.

CaseStudy

BespokeSoftwareMitcoprogrammerscancreateanytypeofsoftwareinanyspecificlanguageforanybusinessplatform.Thecompanyprogrammershavegreattendencytodevelopandmaintainallsoftwaretoclientslikingandtheyconstantlyworkwithclientsthroughouteachprojectinordertosatisfyalloftheclient’sneeds

CaseStudy

GenericSoftwareSoftwarepackagesthatthecompanyhasdevelopedareavailableforclientstocustomizetotheircompaniesneedsanditisamuchfastsolutiontoalackofsoftwarethandevelopinganewsoftwarepackage.Thecompanyhasfollowingpre-madepackagesavailable:-ISPXS-ISPsolutionsSystemAccountXS-AccountManagementSystemAttendanceandPayrollmanagementsystemTelephonecallbillingsystemCaseStudy-RequirementsEngineeringPracticesFollowedbyMITCOTherequirementsengineeringprocessatMITCOstartswithelicitationmeeting,inwhichMITCOdemandsonededicatedpersonforcustomerorganization.Thispersonisresponsibleforfurthercorrespondencewithinthecustomerorganization.CaseStudy-RequirementsEngineeringPracticesFollowedbyMITCO1)ElicitationProcessMITCOusuallyelicitedtherequirementsfromthecustomerintheformof:-MeetingsInterviewsQuestionnairesObservationNormallycompanyaskthecustomertodedicateonepersonforrequirementselicitationthroughouttheproject.CaseStudy-RequirementsEngineeringPracticesFollowedbyMITCO1)ElicitationProcess(Continuous)Thecompanyisnotboundtoonefixedtechniquethey

usedifferenttechniquesforelicitationdependingupontheprojectsize.Inordertoknowwellaboutthesystemdomain,questionsfortheinterviewsarepreparedinadvance.Theyusethistechniquetoattainthebetterunderstandingofthesystemandtoknowwhattheclientactuallywantsfromthesystem.CaseStudy-RequirementsEngineeringPracticesFollowedbyMITCO1)ElicitationProcess(Continuous)MITCOdedicatedtwopersonsforrequirementelicitation.Oneisprojectmanagerandtheotherissystemanalyst.

Bothofthemproducethequestionnaireforaninterviewinaneffectivewaywhichcanhelpthemtobetterextracttherequirementsfromdifferentperspectives.Thestakeholders

involveduringrequirementelicitationarecustomer,projectmanager,andthesystemanalyst.CaseStudy-RequirementsEngineeringPracticesFollowedbyMITCO2)RequirementsAnalysisandNegotiationDuringelicitationprocesssystemanalystgathersalltheinformationandwritesitdownintheworddocument.Theninnextstepsystemanalystwritesdowntheinitialdraftofsoftwarerequirementdocumentinwordfileandapproveitfromtheprojectmanagertoaddanymissinginformation.Thenprojectmanagerarrangemeetinginwhichsystemanalyst,developmentleadandQualityAssuranceleadparticipatestodiscussandanalyzetherequirementswrittenintheinitialdraft.CaseStudy-RequirementsEngineeringPracticesFollowedbyMITCO2)RequirementsAnalysisandNegotiation(Continuous)Inthismeetingtheydiscusstherequirementsandhighlighttheunnecessaryandambiguousrequirements.Theprojectmanagerwillthendiscussthehighlightedrequirementswiththecustomerinseparatemeetingfornegotiation.Innegotiationprocessifthecustomerstillinsistsforparticularrequirementtoimplementthentheprojectmanagerdemandsfurtherjustificationtoimplementthatrequirement.CaseStudy-RequirementsEngineeringPracticesFollowedbyMITCO3)RequirementsDocumentorSRSMITCOusuallyusestheirowndesignedtemplateforwritingSoftwareRequirementSpecification

inworddocument,andfordifferentfiguressuchasflowchartstheyuseMicrosoftVisioandRationalRose.AsdiscussedbeforeMitcoelicitrequirementbydifferenttechniquessuchasinterviews,observation,andquestionnairewhichvariesfromprojecttoproject.AfterelicitationprocesstheymanageinitialdraftofrequirementspecificationwrittenbySystemAnalyst.CaseStudy-RequirementsEngineeringPracticesFollowedbyMITCO3)RequirementsDocumentorSRS(Continuous)Inanalysisandnegotiationifthereisanychangeoccurstheychangeininitialdraft.FinallyafterreviewofrequirementdocumenttheyproducefirstfinalversionofSoftwareRequirementSpecificationdocumentwhichisdeliveredandsignedbybothpartiesforproofandstartofdevelopmentprocess.

Indevelopmentphaseifanychangerequiresinrequirementbydevelopmentteam/CustomeritisdiscussinteaminwhichcustomerparticipatesandifchangeapprovedthennewversionofSRSintroducedwithchangesCaseStudy-RequirementsEngineeringPracticesFollowedbyMITCO4)RequirementsValidationTovalidatetherequirementsMITCOfollowstheirowntechniquetochecktheconsistencyandcompleteness

ofrequirements.IntheirtechniquetheinitialdraftofSRSisdistributedtoProjectManager,DevelopmentLead,and

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