半结构化数据模型及查询语言

DATA MODEL AND QUERY LANGUAGE OF SEMI STRUCTURED INFORMATION

摘要: 在传统数据库中要求查询处理时数据的结构模式已知且固定，这在ＷＷＷ和异构信息源集成等半结构化数据情形下很难满足．为此，文中给出了一个无模式的自描述简单对象模型ＳＤＯＭ和相应的查询语言ＳＤＯＱＬ，很好地解决了上述问题．文中同时给出了与查询处理相关的若干问题．

Abstract: In order to achieve interoperation among heterogeneous information sources and WWW information,a data model with self description object characteristics（SDOM） of semistructured data is given and the related query language （SDOQL） is described in the paper.The related querying processing issues are also presented.