Incremental Maintenance of Externally Materialized Views
Incremental Maintenance of Externally Materialized Views
复制标题
外部物化视图的增量维护
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
Matthias Jarke
中科院分区：
文献类型：
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作者：
M. Staudt;Matthias Jarke
随着Internet的出现，从自治客户端访问数据库服务器将变得越来越普遍。在本文中，我们提出了一个监控服务，可以提供这样的数据库服务器，并提出了算法实现。与已发布的视图维护算法相比，我们不假设服务器在计算要通知的差异视图更改时可以访问原始物化。我们也不假设任何数据库的能力，在客户端，因此精确计算所需的差异，而不仅仅是一个近似值，因为是在同质clientserver数据库中的缓存一致性技术。该方法已在支持基于Internet的客户机-服务器体系结构的Meta数据管理系统ConceptBase中实现，并在一些协同设计应用中进行了试验。
With the advent of the Internet, access to database servers from autonomous clients will become more and more popular. In this paper, we propose a monitoring service that could be offered by such database servers, and present algorithms for its implementation. In contrast to published view maintenance algorithms, we do not assume that the server has access to the original materialization when computing differential view changes to be notified. We also do not assume any database capabilities on the client side and therefore compute precisely the required differentials rather than just an approximation, as is done by cache coherence techniques in homogeneous clientserver databases. The method has been implemented in ConceptBase, a meta data management system supporting an Internet-based client-server architecture, and tried out in some cooperative design applications.