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1、信息与计算科学毕业设计毕业设计（论文）外文翻译题目高级数据库应用专业信息与计算科学班级学生指导教师11信息与计算科学毕业设计AdvancedDatabaseApplicationsThe1990shaveseensignificantchangesinthecomputerindustry.Indatabasesystems,wehaveseenthewidespreadacceptanceofRDBMSsfortraditionalbusinessapplications,suchasorderproces
2、sing,inventorycontrol,banking,andairlinereservations.However,existingRDBMSshaveproveninadequateforapplicationswhoseneedsarequitedifferentfromthoseoftraditionalbusinessdatabaseapplications.Theseapplicationsinclude:■computer-aideddesign(CAD);■computer-aidedma
3、nufacturing(CAM);■computer-aidedsoftwareengineering(CASE);■officeinformationsystems(OIS)andmultimediasystems;■digitalpublishing;■eographicinformationsystems(GIS);■interactiveanddynamicWebsites.Computer-aideddesign(CAD)ACADdatabasestoresdatarelatingtomechani
4、calandelectricaldesigncovering,forexample,buildings,aircraft,andintegratedcircuitchips.Designsofthistypehavesomecommoncharacteristics:■Designdataischaracterizedbyalargenumberoftypes,eachwithasmallnumberofinstances.Conventionaldatabasesaretypicallytheopposit
5、e.Forexample,theDreamHomedatabaseconsistsofonlyadozenorsorelations,althoughrelationssuchasPropertyForRent,Client,andViewingmaycontainthousandsoftuples.■Designsmaybeverylarge,perhapsconsistingofmillionsofparts,oftenwithmanyinterdependentsubsystemdesigns.■The
6、designisnotstaticbutevolvesthroughtime.Whenadesignchangeoccurs,itsimplicationsmustbepropagatedthroughalldesignrepresentations.Thedynamicnatureofdesignmaymeanthatsomeactionscannotbeforeseenatthebeginning.■Updatesarefat-reachingbecauseoftopologicalorfunctiona
7、lrelationships,tolerances,andsoon.Onechangeislikelytoaffectalargenumberofdesignobjects.■Often,manydesignalternativesarebeingconsideredforeachcomponent,andthecorrectversionforeachpartmustbemaintained.Thisinvolvessomeformofversioncontroland11信息与计算科学毕业设计config
8、urationmanagement.■Theremaybehundredsofstaffinvolvedwiththedesign,andtheymayworkinparallelonmultipleversionsofalargedesign.Evenso,theend-productmustbeconsistentandcoordinated.Thisissometimesreferredtoa
