[View.Updating.and.Relational.Theory(2012.12)].C.J.Date.文字版

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1、ViewUpdatingandRelationalTheorySolvingtheViewUpdateProblemC.J.DateViewUpdatingandRelationalTheorybyC.J.DateCopyright©2013C.J.Date.Allrightsreserved.PrintedintheUnitedStatesofAmerica.PublishedbyO’ReillyMedia,Inc.,1005GravensteinHighwayNorth,Sebastopol,CA9547

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4、ViewUpdatingandRelationalTheoryandrelatedtradedressaretrademarksofO’ReillyMedia,Inc.Manyofthedesignationsusedbymanufacturersandsellerstodistinguishtheirproductsareclaimedastrademarks.Wherethosedesignationsappearinthisbook,andO’ReillyMedia,Inc.,wasawareofatr

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6、-1-449-35784-9[LSI]IntensionextensionEdgarF.CoddInventedanotionWenowknowasviewsNowviewandbaserelvarExchangeabilityGotusallsingingThoseviewupdateblues—Anon.:WhereBugsGoThedukeofOrmondtookaviewyesterdayofhistroop,andorderedallthathadbayorgreyhorsestochangethe

7、mforblack.—earliestknownexample(1693)ofviewupdating,quotedintheOxfordEnglishDictionaryfrom“ABriefHistoricalRelationofStateAffairs1678–1714,”byNarcissusLuttrell(1857)Alittlelearningisadangerousthing;Drinkdeep,ortastenotthePierianspring:Thereshallowdraftsinto

8、xicatethebrain,Anddrinkinglargelysobersusagain.—AlexanderPope:AnEssayonCriticism(1711)───♦♦♦♦♦───TomywifeLindyandmydaughtersSarahandJenniewithallmyloveAbouttheAuthorC.J.Dateisanindependentauthor,lectur