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Multiversion views: Constructing views in a multiversion database

机译:多版本视图:在多版本数据库中构造视图

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摘要

Commercial DBMS offer mechanisms for views and for versions. Research and development efforts in these di- rections are, however, characterized by concentration on either the one or the other mechanism, very seldom trying to take advantage of their complementary properties. This paper presents the multiversion view mechanism, which allows these orthogonal concepts to be managed together, taking advantage of their combined characteristics. Unlike previous efforts to combine views and versions, multiversion views create views over versions of data, thereby offering users coherent logical units of the versioned world. They allow a wide range of (virtual) data reorganization possibilities, which encompass, among others, operations found in temporal databases and OLAP. Multiversion views are illustrated and motivated by needs from a real life large case study of complex configuration management, described at the end of the paper.
机译:商业DBMS提供了用于视图和版本的机制。然而,在这些方面的研究和开发工作的特点是只专注于一种或另一种机制,很少尝试利用它们的互补特性。本文介绍了多版本视图机制,该机制允许利用它们的组合特性来一起管理这些正交概念。与以前将视图和版本组合在一起的努力不同,多版本视图在数据版本上创建视图,从而为用户提供版本化世界的一致逻辑单元。它们提供了广泛的(虚拟)数据重组可能性,其中包括临时数据库和OLAP中的操作。多版本视图是根据现实生活中复杂配置管理大型案例研究的需求进行说明和激发的,如本文结尾所述。

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