简介:要调用CDatabase的打开(Open)函数以进行数据源的实际连接,应用程序可以使用标准的函数进行数据库操作,·数据源连接函数
简介:AgraphpropertyisasetofgraphssuchthatifthesetcontainssomegraphGthenitalsocontainseachisomorphiccopyofG(withthesamevertexset).AgraphpropoertyPonnverticesissaidtobeelusive,ifeverydecisiontreealgorithmrecognizingPmustexaminealln(n-1)/2parisofverticesintheworstcase.Karpconjecturedthateverynontrivialmonotonegraphpropertyiselusive,Inthispaper,thisconjectureisprovedforsomecases,Especially,itisshownthatiftheabstractsimplicialcomplexofanontrivialmonotonegraphpropertyPhasdimensionnotexceeding5,thenPiselusive.