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1、毕业设计(论文)外文资料翻译学生姓名：学号：所在学院：电子与信息工程学院专业：计算机科学与技术指导教师：2011年12月25日EnglishDataOriginalTextTranslatestheforeignmaterials:①Author:FerasT.Dabous②Booktitle(orpapertopic):DatabaseManagement③Publishinghouse(orpublicationname):http://www.microsoft.com/china/database/default.mspx④Pu
2、blicationtime(orregistrationnumber):july2004DatabaseManagementDatabase(sometimesspelleddatabase)isalsocalledanelectronicdatabase,referringtoanycollectionsofdata,orinformation,thatisspeciallyorganizedforrapidsearchandretrievalbyacomputer.Databasesarestructuredtofacilitate
3、thestorage,retrievalmodificationanddeletionofdatainconjunctionwithvariousdata-processingoperations.Databasecanbestoredonmagneticdiskortape,opticaldisk,orsomeothersecondarystoragedevice.Adatabaseconsistsofafileorasetoffiles.Theinformationinthethesefilesmaybebrokendowninto
4、records,eachofwhichconsistsofoneormorefieldsarethebasicunitsofdatastorage,andeachfieldtypicallycontainsinformationpertainingtooneaspectorattributeoftheentitydescribedbythedatabase.Usingkeywordsandvarioussortingcommands,userscanrapidlysearch,rearrange,group,andselectthefi
5、eldsinmanyrecordstoretrieveorcreatereportsonparticularaggregatesofdata.Databaserecordsandfilesmustbeorganizedtoallowretrievaloftheinformation.Earlysystemwerearrangedsequentially(i.e.,alphabetically,numerically,orchronologically);thedevelopmentofdirect-accessstoragedevice
6、smadepossiblerandomaccesstodataviaindexes.Queriesarethemainwayusersretrievedatabaseinformation.Typicallytheuserprovidesastringofcharacters,andthecomputersearchesthedatabaseforacorrespondingsequenceandprovidesthesourcematerialsinwhichthosecharactersappear.Ausercanrequest,
7、forexample,allrecordsinwhichthecontentofthefieldforaperson’slastnameisthewordSmith.Themanyusersofalargedatabasemustbeabletomanipulatetheinformationwithinitquicklyatanygiventime.Moreover,largebusinessandotherorganizationstendtobuildupmanyindependentfilescontainingrelateda
8、ndevenoverlappingdata,andtheirdata,processingactivitiesoftenrequirethelinkingofdatafromseveralfiles.Sev
