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1、IntroductionofDatabaseManagementSoftwareSummarizationofDatabaseLessonOneSummarizationofDatabaseAdatabasemaybedefinedasacollectioninterrelateddatastoredtogetherwithaslittleredundancyaspossibletoserveoneormoreapplicationsinanoptimalfashion.bedefinedasinterrelatedredundancyoptimalfashion把
2、…定义为…adj.相关的n.冗余最理想的方式IntroductiontoRelationalDatabaseSyntactically,theinformationthatafieldcontainsconformstoacertaintype,suchasareal,aninteger,acharacterorastring.Semantically,themeaningofinformationwithinafieldcorrespondstotheconceptorattributerepresentedbythefield.syntactically语法上f
3、ield字段Integer整型Semantically语义上correspondsto与…相对应concept概念attribute属性represent表示，象征Therelationaldatabasemodelfollowedonfromhierarchicalandnetworkdatabasesandispresentlythemostwidelyuseddatamodelfordatabase.Priorto1970,mainframedatabaseapplicationsweredominatedbynetworkandhierarchicalmod
4、els.relationaldatabasemodel关系数据库模型followon跟随，继承，在…之后hierarchical层次的presently目前，不久widely广泛地priorto在…之前，优先于dominate支配，统治relationship关系，关联widespread广泛的acceptance接受，容忍straightforward正直的，易懂的conceptual概念上的algebra代数scheme计划；阴谋，安排beconstructedfrom由…构成govern统治，支配，管理DataBaseManagementSystem(DBMS
5、)Thesystemsoftwarepackagethathandlesthedifficulttasksassociatedwithcreating,accessingandmaintainingdatabaserecordsiscalledadatabasemanagementsystem(DBMS).ADBMSwillusuallybehandlingmultipledatacallsconcurrently.packagen.包裹，包handlen.柄,手感；vt.触摸,处理,操作vi.搬运,易于操纵；n.[计]句柄creatingvt.创造,创作,造成ac
6、cessn.通路,入门；vt.存取,接近maintainvt.维持,维修,继续,供养,主张multipleadj.多样的；n.倍数,若干；v.成倍增加concurrentlyadv.并发地ManagementInformationSystem(MIS)proceduresn.程序，手续Purposen.目的，意图；vt.打算，企图generallyspeaking一般而言responsibilityn.责任，职责obtainevt.获得，得到StructuredQueryLanguage(SQL)SQLisadatabaseprocessinglanguageend
7、orsedbytheAmericanNationalStandardsInstitute.Withitssimple,powerfulsyntax,SQLrepresentsagreatprogressindatabaseaccessforalllevelsofmanagementandcomputingprofessionals.endorsevt.背书，认可instituten.学会,学院,协会vt.创立,开始,制定,开始(调查),提起(诉讼)syntaxn.语法，句法professionaln.自由职业者,专业人员；adj.专业的,职业的formn.形状,
