MIS.docx

MIS.docx

《MIS.docx》由会员分享，可在线阅读，更多相关《MIS.docx（8页珍藏版）》请在冰点文库上搜索。

MIS

ⅠMISSolutionfortheAgencyanditsImplementationProcess

1.1MISSolution

Accordingtothedescription,OutsourcingProgrammersSystemismoreappropriateforaRealEstateAgency.

Underthesystem,theAgencywilltransfermostresponsibilitytotheoutsiderwhichismoreprofessional,suchassystemdevelopmentandcomputeroperation.Typically,itshouldnegotiateadevelopmentprice,providedetailedspecifications,andtheoutsourcerhiresworkersanddevelopssystems

TheprimaryadvantageofthissystemisthatOutsourcingProgrammersSystemcanreducetheworkloadandtheentireprocesseswillbeinaprofessionalandefficientway.

1.2ImplementationProcess

ARealEstateAgencyneedsasystemsdevelopmentlifecycle（SDLC）toexplainitsimplementationprocess,whichisaprocessofestablishingcomputersystem.SDLCcanovercometheproblemsthatarisewithlargeprojectsthatinvolvemanyusersandrequirethousandsofhoursofdevelopmentbymultipleanalystsandprogrammers.BelowisSystemsdevelopmentlifecycleoftheAgency.

Figure1SystemsdevelopmentlifecycleoftheAgency

Onthebasisofthisfigure,sixstagesoftheAgencycanbegiven:

1.FeasibilityandPlanning

Afeasibilitystudyisaquickexaminationoftheproblems,goalsandexpectedcostsofthesystems.Theobjectiveistodeterminewhethertheproblemcanreasonablybesolved.

Assessthefeasibilityoftheexistingsystemfromtheeconomicandtechnicalaspects.Ineconomicaspect,throughtheanalysisofcost/benefit,determinewhentheapplicationcanrecoverthecost.Intechnicalaspect,throughtheidentificationofeachalternativetechnology,determinewhetherbuildtheapplicationornot.

2.SystemsAnalysis

Thisstageistodeterminehowtheexistingsystemworksandwheretheproblemsarelocated,andbreakthesystemintopieces.Dataflowdiagramsareacommonmethodtodisplaythatisdeterminedduringthisstage.

3.SystemsDesign

Duringthisstage,OutsourcingProgrammersSystemistypicallydesignedonpaper.Theobjectiveofthisstageistodescribeitasacollectionofmodulesorsubsystems.

4.SystemsImplementation

ThisstageinvolvesinstallationandchangeoverfromtheexistingsystemtoOutsourcingProgrammersSystem,includingtrainingusersandmakingadjustmentstothesystem.Acrucialstageinimplementationisfinaltesting.

Inthisstage,almosteveryemployeeistrainedinaprofessionalwaytounderstandthenewsystem,inordertomakesureitisoperatedinarightway.

5.SoftwareMaintenance

Afterhardware’supgradeandusers’changes,errorsmayexistinthesystem.Thentherearemanyjobsofoverseeingandmakingthesemodifications.

EverydaythenewsystemshouldbemonitoredandmodifiedincreasinglybythespecialistsinthisAgency.

6.Evaluation

Thelaststageistoevaluatetheresultingsystem,itisimportanttoassesstheeffectivenessoftheparticulardevelopmentprocess.

EvaluatewhetherthenewsystemcanbringbenefitsfortheAgencyandisindeedeffective.

StrengthsandWeaknessesofSDLC:

Strengths

Weaknesses

Control

Monitorlargeprojects

Detailedsteps

Evaluatecostsandcompletiontargets

Documentation

Well-defineduserinput

Easeofmaintenance

Developmentanddesignstandards

TolerateschangesinMISstaffing

Increaseddevelopmenttime

Increaseddevelopmentcosts

Systemsmustbedefinedupfront

Rigidity

Hardtoestimatecosts,projectoverruns

Userinputsometimeslimited

ⅡTrainingRequirementstosupportMIS

TheAgencyshouldtrainitsemployeesfromfouraspectsbelow:

1.SoftwareSupport

Traintheabilitiesofhelpdeskoperator,makingthemunderstandhowtousesystemstoinquireabouttheconditionsofeachhouseforpeoplewhowhattobuyorknowthehouse.

AndtraintheabilitiesofPCtechnicalsupport,inordertoprovidetechnicalsupportforthedevelopmentofhouseavailabilitysoftware.

2.NetworkSupport

Trainmanagers’abilitiesofbuildingnetworksthatcancorrectforfailuresandbottlenecks,inordertolettheentireagencynetworkbeavailable24hoursaday,7daysaweek.

Andtrainnetworkanalyst’sabilitythatithasspecializedskillstoconfiguretherouter,monitortheconnectionandkeepupwithcurrentadvisories,inordertomakethenetworkinsecurity.

3.DataandDatabaseAdministration

Trainadministrator’sabilitythatitmaintainstheAgency’sdatabase,monitorperformanceofthedatabasemanagementsystem.

Andtraindatabaseanalystsolveday-to-dayproblemswhicharisewithitshouse-listingdatabase

4.ExpertSystemSupport

Byrulesandalotofproblemsprovidedbycustomersabouthousearesummarizedbyemployeesformanyyears,anexpertsystemoftheAgencyisestablished.Trainemployeesunderstandthesystemandgaintheexperience,sothattheycansolveanyquestionsandreachsconclusion,becauseithasprovisionsforexplainingcustomer’sanswers.

ⅢMISDataoftheAgencyandUseoftheseData

1.Normalization

Agent（AgentID,Name,Address,Sex,Socialsecuritynumber,Realestatelicensenumber）

House（Houselistingnumber,Owner’sname,Location,Listingdate,Price,Style）

Achievements（AgentID,Houselistingnumber,Achievement）

2.TableDesign

Figure2AgentDesign

Figure3HouseDesign

Figure4AchievementsDesign

3.Relationship

Figure5RelationshipsbetweenAgent,HouseandAchievements

4.TestData

Figure5TestDataofAgent

Figure6TestDataofHouse

Figure7TestDataofAchievements

5.Query

Question:

Whichowner’shouseissalebyanagentonhisorherowneffort?

Figure8Query

6.Report

Figure9Reportofachievementsofsomeowners’houses