Tackling inconsistencies in data integration through source preferences
Tackling inconsistencies in data integration through source preferences
复制标题
通过源首选项解决数据集成中的不一致问题
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
R. Rosati
中科院分区：
文献类型：
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作者：
Giuseppe De Giacomo;D. Lembo;M. Lenzerini;R. Rosati
处理不一致性是数据集成系统中的主要挑战之一，其中存储在本地源中的数据可能违反全局级别上指定的完整性约束。最近，已经提出了声明性的方法来处理这样的问题。现有的声明性建议在试图解决不一致性时不考虑在源之间指定的首选项断言。另一方面，集成系统的设计者可能经常在规范中包括指示数据源质量的偏好规则。在本文中，我们考虑本地视图集成系统，并提出了一种方法，允许一个正式的语义分配到数据集成系统的声明性规范，包括源偏好的信息。据我们所知，我们的方法是第一个考虑在一个声明性的方式处理本地作为视图集成系统中不一致的数据源质量的信息。
Dealing with inconsistencies is one the main challenges in data integration systems, where data stored in the local sources may violate integrity constraints specified at the global level. Recently, declarative approaches have been proposed to deal with such a problem. Existing declarative proposals do not take into account preference assertions specified between sources when trying to solve inconsistency. On the other hand, the designer of an integration system may often include in the specification preference rules indicating the quality of data sources. In this paper, we consider Local-As-View integration systems, and propose a method that allows one to assign formal semantics to a data integration system whose declarative specification includes information on source preferences. To the best of our knowledge, our approach is the first one to consider in a declarative way information on source quality for dealing with inconsistent data in Local-As-View integration systems.