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Consistency and enforcement of access rules in cooperative data sharing environment

机译：协作数据共享环境中访问规则的一致性和强制性

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In this paper we consider the situation where a set of enterprises need to collaborate to provide rich services to their clients. An enterprise may need information from several other collaborating parties to satisfy its business requirements. Such collaboration often requires controlled access to one another's data, which we assume is stored in standard relational form. We assume that a set of access rules is given to the parties to regulate the data sharing, and such rules are defined over the join operations over the relational data. It is expected that the access rules will be designed according to business needs of the involved enterprises and although some negotiation between them will be involved, only a comprehensive analysis of the rules can uncover all issues of consistency between rules and their adequacy in answering the authorized queries (which we call enforceability). In this paper, we provide such an analysis and provide algorithms for checking and removing inconsistency, checking for rule enforceability, and minimally updating the rules to ensure enforceability whenever possible using only the existing parties. The involvement of specialized third parties for consistency and enforcement purposes is not addressed in this paper.
机译：在本文中，我们考虑了一组企业需要合作以为其客户提供丰富服务的情况。企业可能需要来自其他几个合作方的信息才能满足其业务需求。这种协作通常需要以受控方式访问彼此的数据，我们假设这些数据以标准关系形式存储。我们假定向各方提供了一组访问规则以规范数据共享，并且这些规则是在关系数据的联接操作上定义的。预计将根据相关企业的业务需求设计访问规则，尽管将涉及它们之间的一些协商，但是只有对规则进行全面分析才能发现规则之间的一致性及其在回答授权问题上的充分性的所有问题。查询（我们称为可执行性）。在本文中，我们提供了这样的分析，并提供了用于检查和消除不一致性，检查规则可执行性以及最小限度地更新规则以确保在仅使用现有各方的情况下可执行性的算法。本文不涉及专门的第三方出于一致性和执行目的而涉及的问题。

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