%0 Journal Article
%T The Optimization of Distributed Join in C-POREL System
%A Jin Hongping
%A Gu Junzhong
%J 计算机科学技术学报
%D 1987
%I 
%X C-POREL is a distributed relational data base management system, with full distributiontransparency. A relation can be horizontally fragmented into several subrelations allocated todifferent sites. When two or more fragmented relations appear in a join query, many-to-many semijoins between correspondent relations are usually needed in order to fully reducerelations involved. Distribution dependent attributes of a relational schema are defined in thispaper. An optimization approach of distributed join which decreases the amount of trans-mission data by avoiding many-to-many semijoins is given.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=F57FEF5FAEE544283F43708D560ABF1B&aid=6F4E265664C272E10E5E4BF8CD923803&yid=9C2DB0A0D5ABE6F8&vid=0B39A22176CE99FB&iid=E158A972A605785F&sid=44A4891E33BFF455&eid=11CEECA6DA9E4AC5&journal_id=1000-9000&journal_name=计算机科学技术学报&referenced_num=0&reference_num=0