【24h】

From XML DTDs to Entity-Relationship Schemas

机译:从XML DTD到实体关系模式

获取原文
获取原文并翻译 | 示例

摘要

The need for managing large repositories of data coming from XML documents is increasing; in fact, XML is emerging as the standard format for documents exchanged over the internet. At University of Bergamo, recently we developed the ERX Data Management System, to study issues concerning the management of data coming from XML documents; its data model, called ERX (Entity Relationship for XML), being an extension of the classical ER model, allows to deal with concepts coming from XML documents at the conceptual level, and allows to reason about integration of data coming from different XML document classes. This paper focuses on the problem of automatically deriving Entity-Relationship Schemas (ERX Schemas) from DTDs (Document Type Definition). In fact, the derivation of such schemes from DTDs might be a hard work to do by hand, since real DTDs are very complex and large.
机译:管理来自XML文档的大型数据存储库的需求正在增长;实际上,XML正在成为互联网上交换文档的标准格式。最近,在贝加莫大学,我们开发了ERX数据管理系统,以研究与XML文档数据管理有关的问题;它的数据模型称为ERX(XML的实体关系),是经典ER模型的扩展,允许在概念级别上处理来自XML文档的概念,并可以推理来自不同XML文档类的数据的集成。本文着重于从DTD(文档类型定义)自动派生实体关系模式(ERX模式)的问题。实际上,从DTD派生此类方案可能是一项艰巨的工作,因为实际的DTD非常复杂且庞大。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号