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Diplomat: A System for Building and Maintaining Heterogeneous Database Alliances

Diplomat：构建和维护异构数据库联盟的系统

基本信息

批准号：
9632595
负责人：
Roger King
金额：
$ 42万
依托单位：
University of Colorado at Boulder
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1996
资助国家：
美国
起止时间：
1996-08-15 至 1999-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9632595&HistoricalAwards=false
关键词：
Diplomat System Building Maintaining Heterogeneous

项目摘要

Many large corporations find themselves with a massive legacy database problem. Their data is distributed across many semantically related databases that are physically and logically disjoint. Until now, there have been two primary approaches for interconnecting heterogeneous database systems: (a) point solutions, in which software systems supporting focused interconnections between databases are constructed on an as-needed and ad hoc basis; and (b) global solutions, in which a common, logical database is created that encompasses a very large number of databases. (A variation of the latter is the federated approach, which involves a global federation manager that controls all interaction between the component databases.) The Diplomat project chooses a middle ground between these two extremes, and provides technology to support multiple loose database interconnections called `alliances`. The framework also provides mechanisms to enforce consistency between individual databases, and across alliances. The project draws on existing research on view specification, inter-database constraints, and information flow. This research serves as a proof of concept that maintainers of large business applications (such as banking, insurance, and telecommunications) can integrate multiple, heterogeneous, legacy database systems in a cost-effective, evolvable fashion.

许多大公司发现自己有一个巨大的遗留数据库问题。它们的数据分布在许多语义相关的数据库中，这些数据库在物理上和逻辑上是不相交的。到目前为止，已经有两种主要的方法用于互连异构数据库系统：（a）点解决方案，其中支持数据库之间的集中互连的软件系统是在按需和特设的基础上构建的;以及（B）全局解决方案，其中创建包含非常大量的数据库的公共逻辑数据库。（后者的一个变体是联邦方法，它涉及一个全局联邦管理器，控制组件数据库之间的所有交互。 “外交官”项目在这两个极端之间选择了一个中间地带，并提供了支持称为“联盟”的多个松散数据库互联的技术。该框架还提供了在各个数据库之间以及跨联盟执行一致性的机制。该项目借鉴了现有的研究视图规范，数据库间的约束，和信息流。这项研究作为一个概念证明，大型业务应用程序（如银行，保险和电信）的维护人员可以集成多个，异构的，遗留的数据库系统在一个具有成本效益的，可进化的方式。