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arXiv 0705.1457cs.DB
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面向数据仓库集成的Web数据建模

Web data modeling for integration in data warehouses

Sami Miniaoui, Jérôme Darmont, Omar Boussaïd

摘要:

在数据仓库过程中,数据准备阶段至关重要。掌握这个阶段可以在执行多维分析或使用数据采掘算法时在时间和性能方面获得实质性的收益。此外,数据仓库可能需要外部数据。在这种情况下,网络是一个普遍的数据源,但在这种介质上广播的数据是非常异构的。在本文中,我们提出了一个复杂的对象表示任何有用的数据源(数据库,纯文本,HTML和XML文档,图像,声音,视频剪辑的超类UML概念模型。转换为逻辑模型是通过XML实现的,它有助于将所有这些不同的异构数据集成到统一的格式中,并且其模式定义在我们的数据仓库环境中提供了一流的元数据。此外,我们受益于XML的灵活性、可扩展性和半结构化数据模型的丰富性,但是如果需要更多的结构化,我们仍然能够在以后将XML文档映射到数据库中。

英文摘要:

In a data warehousing process, the data preparation phase is crucial. Mastering this phase allows substantial gains in terms of time and performance when performing a multidimensional analysis or using data mining algorithms. Furthermore, a data warehouse can require external data. The web is a prevalent data source in this context, but the data broadcasted on this medium are very heterogeneous. We propose in this paper a UML conceptual model for a complex object representing a superclass of any useful data source (databases, plain texts, HTML and XML documents, images, sounds, video clips...). The translation into a logical model is achieved with XML, which helps integrating all these diverse, heterogeneous data into a unified format, and whose schema definition provides first-rate metadata in our data warehousing context. Moreover, we benefit from XML's flexibility, extensibility and from the richness of the semi-structured data model, but we are still able to later map XML documents into a database if more structuring is needed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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