%0 Journal Article
%T Simulation Study on Improved Index Technology for XML Data<br>改进XISS索引技术的仿真研究
%A WANG Jin
%A HE Xian-bo
%A HE Chun-lin
%A <br>王锦
%A 何先波
%A 贺春林
%J 计算机科学
%D 2012
%I 
%X XISS index is currently typical delegate supporting regular path expression in XML data index XISS index produces large path expression and the intermediate results for long inctuires, so join operation cost is very high, which increases the complexity of query, affects the query efficiency. In order to improve the XML data query efficiency, the article put forward an improved XISS index Improved XISS index at first introduced DTD schema information to improve the coding method, and then the node index structure was improved, to decrease the intermediate links, make query time not related with path length and improve query efficiency. hhe contrast experiment on the index and the improved XISS was made, and the results show that the improved XISS index decreases indexed time, accelerated inquire response speed and improves the XML data query result.
%K Index structure
%K Query processing
%K Decomposition of path expressions<br>索引结构
%K 查询处理
%K 分解路径表达式
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=1A50AD49C0C949497A63A651D9251076&yid=99E9153A83D4CB11&vid=7C3A4C1EE6A45749&iid=CA4FD0336C81A37A&sid=856C2E13D1000DB7&eid=70AC2EF7F2065E09&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=8