{"title":"Query modification in object-oriented database federations","authors":"Mark W. W. Vermeer, P. Apers","doi":"10.1109/COOPIS.1997.613816","DOIUrl":null,"url":null,"abstract":"We discuss the modification of queries against an integrated view in a federation of object-oriented databases. We present a generalisation of existing algorithms for simple global query processing that works for arbitrarily defined integration classes. We then extend this algorithm to deal with object-oriented features such as queries involving path expressions and nesting. We show how properties of the OO-style of modelling relationships through object references can be exploited to reduce the number of subqueries necessary to evaluate such queries.","PeriodicalId":293694,"journal":{"name":"Proceedings of CoopIS 97: 2nd IFCIS Conference on Cooperative Information Systems","volume":"72 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1997-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of CoopIS 97: 2nd IFCIS Conference on Cooperative Information Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/COOPIS.1997.613816","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
We discuss the modification of queries against an integrated view in a federation of object-oriented databases. We present a generalisation of existing algorithms for simple global query processing that works for arbitrarily defined integration classes. We then extend this algorithm to deal with object-oriented features such as queries involving path expressions and nesting. We show how properties of the OO-style of modelling relationships through object references can be exploited to reduce the number of subqueries necessary to evaluate such queries.
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