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1、附录AIntroductiontodatabaseinformationmanagementsystemThedatabaseisstoredtogetheracollectionoftherelevantdata,thedataisstructured,non-harmfulorunnecessaryredundancy,andforavarietyofapplicationservices,datastorageindependentoftheuseofitsprocedures,insertnew
2、dataonthedatabase,revised,andtheoriginaldatacanberetrievedbyacommonandcanbecontrolledmanner.Whenasysteminthestructureofanumberofentirelyseparatefromthedatabase,thesystemincludesa"databasecollection".Databasemanagementsystemisamanipulationandlarge-scaleda
3、tabasemanagementsoftwareisbeingusedtosetup,useandmaintenanceofthedatabase.Itsunifieddatabasemanagementandcontrolsoastoensuredatabasesecurityandintegrity.Databasemanagementsystemusersaccessdatainthedatabase,thedatabaseadministratorthroughDatabasemanagemen
4、tsystemdatabasemaintenancework.Itprovidesavarietyoffunctions,allowsmultipleapplicationsandusersusedifferentmethodsatthesametimeordifferenttimetobuild,modify,andaskedwhetherthedatabase.Itallowsuserstoeasilymanipulatedatadefinitionandmaintenanceofdatasecur
5、ityandintegrity,aswellasthemulti-userconcurrencycontrolandtherestorationofthedatabase.Usingthedatabasecanbringmanybenefits:suchasreducingdataredundancy,thussavingthedatastoragespace;toachievefullsharingofdataresources,andsoon.Inaddition,thedatabasetechno
6、logyalsoprovidesuserswithaverysimplemeanstoenableuserstoeasilyusethepreparationofthedatabaseapplications.Especiallyinrecentyearsintroducedmicro-computerrelationaldatabasemanagementsystem,intuitiveoperation,theuseofflexible,convenientprogrammingenvironmen
7、ttoextensive(generally16machine,suchasIBM/PC/XT,ChinaGreatWall0520,andotherspeciescanrunsoftware),data-processingcapacitystrong.Databaseinourcountryarebeingmoreandmorewidelyused,willbeapowerfultoolofeconomicmanagement.Thedatabaseisthroughthedatabasemanag
8、ementsystem(DBMS-DATABASEMANAGEMENTSYSTEM)softwarefordatastorage,managementanduseofmicro-computerrelationaldatabasemanagementsystemisadatabasemanagementsystemsoftware.Informationmanagementsystemistheuseofdataacquisitionand
