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1、附录AIntroductiontodatabaseinformationmanagementsystemThedatabaseisstoredtogetheracollectionoftherelevantdata,thedataisstructured,non-harmfulorunnecessaryredundancy,andforavarietyofapplicationservices,datastorageindependentoftheuseofitsprocedures,insertnewdataonthedata
2、base,revised,andtheoriginaldatacanberetrievedbyacommonandcanbecontrolledmanner.Whenasysteminthestructureofanumberofentirelyseparatefromthedatabase,thesystemincludesa"databasecollection".Databasemanagementsystemisamanipulationandlarge-scaledatabasemanagementsoftwareis
3、beingusedtosetup,useandmaintenanceofthedatabase.Itsunifieddatabasemanagementandcontrolsoastoensuredatabasesecurityandintegrity.Databasemanagementsystemusersaccessdatainthedatabase,thedatabaseadministratorthroughDatabasemanagementsystemdatabasemaintenancework.Itprovid
4、esavarietyoffunctions,allowsmultipleapplicationsandusersusedifferentmethodsatthesametimeordifferenttimetobuild,modify,andaskedwhetherthedatabase.Itallowsuserstoeasilymanipulatedatadefinitionandmaintenanceofdatasecurityandintegrity,aswellasthemulti-userconcurrencycont
5、rolandtherestorationofthedatabase.Usingthedatabasecanbringmanybenefits:suchasreducingdataredundancy,thussavingthedatastoragespace;toachievefullsharingofdataresources,andsoon.Inaddition,thedatabasetechnologyalsoprovidesuserswithaverysimplemeanstoenableuserstoeasilyuse
6、thepreparationofthedatabaseapplications.Especiallyinrecentyearsintroducedmicro-computerrelationaldatabasemanagementsystem,intuitiveoperation,theuseofflexible,convenientprogrammingenvironmenttoextensive(generally16machine,suchasIBM/PC/XT,ChinaGreatWall0520,andotherspe
7、ciescanrunsoftware),data-processingcapacitystrong.Databaseinourcountryarebeingmoreandmorewidelyused,willbeapowerfultoolofeconomicmanagement.Thedatabaseisthroughthedatabasemanagementsystem(DBMS-DATABASEMANAGEMENTSYSTEM)softwarefordatastorage,managementanduseofmicro-co
8、mputerrelationaldatabasemanagementsystemisadatabasemanagementsystemsoftware.Informationmanagementsystemistheuseofdataacquisitionand
