The Implementation of Temporal Database Management Testbed

传统的数据库管理系统（DBMS）， 在一个单一的点代表企业的状态， 时间，不提供存储或访问支持 时变数据在这个项目中， 提供这种支持时态DBMS的实现 被调查。所采用的方法是 三级存储的细化：一级包含当前数据， 一个包含有关过去（和未来）的数据， 包含已更正的数据。实体就雇员 对时态DBMS的所有组件的改进将是 研究，特别是密切关注存储 结构、并发控制以及 主存储器高速缓存管理器和异步存档管理器。 在可能的情况下使用模拟，模型建立在 可扩展数据库管理系统实施时的经验和经验 数据是需要的。 我们的目标是开发技术，将添加到传统的 数据库管理系统的能力，有效地执行操作， 时间，同时不影响传统的性能 查询。本研究将提供理论依据， 了解时态数据库系统，以及实际的 数据库社区以外领域的应用，例如软件 作为概念开发的工程可能构成基础， 编程环境，帮助管理版本或 并发控制

Conventional database management systems (DBMS's), in representing the state of an enterprise at a single point in time, do not provide support for storing or accessing time-varying data. In this project, the issues involved in the implementation of temporal DBMS's that provide such support are investigated. The adopted approach is the architectural refinement of a three-level store: one containing current data, one containing data concerning the past (and future), and one containing data that has been corrected. The impact of these refinements on all components of a temporal DBMS are to be studied, paying especially close attention to storage structures, concurrency control, and interaction between the main memory cache manager and the asynchronous archive manager. Simulation is used where possible, with a model built on an extensible DBMS when implementation experience and empirical data are desired. The goal is to develop techniques that will add to conventional DBMS's the ability to efficiently perform operations involving time while not impacting the performance of conventional queries. This research will provide theoretical basis and understanding of temporal database system, as well as practical applications in areas beyond database community, e.g. software engineering as concepts developed may form the basis for programming environment, helping to manage versions or concurrency control.