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1、SolutionsChapter77.1.1a)CREATETABLEMovies(titleCHAR(100),yearINT,lengthINT,genreCHAR(10),studioNameCHAR(30),producerC#INT,PRIMARYKEY(title,year),FOREIGNKEY(producerC#)REFERENCESMovieExec(cert#));orCREATETABLEMovies(titleCHAR(100),yearINT,lengthINT,genreCHAR
2、(10),studioNameCHAR(30),producerC#INTREFERENCESMovieExec(cert#),PRIMARYKEY(title,year));b)CREATETABLEMovies(titleCHAR(100),yearINT,lengthINT,genreCHAR(10),studioNameCHAR(30),producerC#INTREFERENCESMovieExec(cert#)ONDELETESETNULLONUPDATESETNULL,PRIMARYKEY(ti
3、tle,year));c)CREATETABLEMovies(titleCHAR(100),yearINT,lengthINT,genreCHAR(10),studioNameCHAR(30),producerC#INTREFERENCESMovieExec(cert#)ONDELETECASCADEONUPDATECASCADE,PRIMARYKEY(title,year));d)CREATETABLEStarsIn(movieTitleCHAR(100)REFERENCESMovie(title),mov
4、ieYearINT,starNameCHAR(30),PRIMARYKEY(movieTItle,movieYear,starName));e)CREATETABLEStarsIn(movieTitleCHAR(100)REFERENCESMovie(title)ONDELETECASCADE,movieYearINT,starNameCHAR(30),PRIMARYKEY(movieTItle,movieYear,starName));7.1.2Todeclaresuchaforeign-keyconstr
5、aintbetweentherelationsMovieandStarsIn,valuesofthereferencingattributesinMovieshouldappearinMovieStarasuniquevalues.However,basedonprimarykeydeclarationinrelationStarIn,theuniquenessofmoviesisguaranteedwithmovieTitle,movieYear,andstarNameattributes.Evenwith
6、titleandyearasreferencingattributesthereisnowayofreferencinguniquemoviefromStarsInwithoutstarNameinformation.Therefore,suchaconstraintcannotbeexpressedusingaforeign-keyconstraint.7.1.3ALTERTABLEProductADDPRIMARYKEY(model);ALTERTABLEPCADDFOREIGNKEY(model)REF
7、ERENCESProduct(model);ALTERTABLELaptopADDFOREIGNKEY(model)REFERENCESProduct(model);ALTERTABLEPrinterADDFOREIGNKEY(model)REFERENCESProduct(model);7.1.4ALTERTABLEClassesADDPRIMARYKEY(class);ALTERTABLEShipsADDPRIMARYKEY(name);ALTERTABLEShipsADDFOREIGNKEY(class
8、)REFERENCESClasses(calss);ALTERTABLEBattlesADDPRIMARYKEY(name);ALTERTABLEOutcomesADDFOREIGNKEY(ship)REFERENCESShips(name);ALTERTABLEOutcomesADDFOREIGNKEY(battle)REFERENCESBattles(name);7.1.5a)ALTERTABL
