arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1108.5451cs.DB
收藏

演绎数据库推理方法实现的一致不动点方法

A Uniform Fixpoint Approach to the Implementation of Inference Methods for Deductive Databases

Andreas Behrend

摘要:

在演绎数据库的研究领域中,三种不同的数据库任务已经得到了深入的研究:查询评估,更新传播和视图更新。在过去的三十年中,已经提出了各种推理机制来实现基于规则的系统的这些主要功能。然而,这些推理机制已经很少在商业数据库系统中使用,直到现在。其中一个重要原因是缺乏一种非常适合在基于SQL的系统中实现的统一方法。在本文中,我们提出了这样一个统一的方法的形式的一个新版本的软后果运营商。此外,我们提出了改进的转换为基础的方法,查询优化和更新传播和视图更新都使用这个操作符作为底层的评估机制。

英文摘要:

Within the research area of deductive databases three different database tasks have been deeply investigated: query evaluation, update propagation and view updating. Over the last thirty years various inference mechanisms have been proposed for realizing these main functionalities of a rule-based system. However, these inference mechanisms have been rarely used in commercial DB systems until now. One important reason for this is the lack of a uniform approach well-suited for implementation in an SQL-based system. In this paper, we present such a uniform approach in form of a new version of the soft consequence operator. Additionally, we present improved transformation-based approaches to query optimization and update propagation and view updating which are all using this operator as underlying evaluation mechanism.

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。

↑