RIA: Semantic Concurrency Control for Real-Time Object- Oriented Databases

RIA：面向实时对象的语义并发控制 数据库 本文研究了并发控制的设计 面向对象的实时数据库技术。 有 两个组成部分的研究：（1）发展的正式 实时面向对象数据库系统的模式模型;以及 (2)开发实时并发控制技术， 使用应用程序语义和不精确性来支持 实时执行所有形式的约束 面向对象数据库这些形式的约束是：数据 对象逻辑一致性约束，数据对象时态 一致性约束，事务逻辑一致性 限制和交易时间限制。 并发 控制技术使用并发控制组件 封装在每个表示条件的对象中， 对象方法的兼容性和语义锁定。 这 项目实现了语义实时并发控制 使用原型实时面向对象数据库的技术 系统 该研究对实时控制应用具有一定的指导意义 具有大量时间受限的数据，例如：医疗 重症监护患者监控，车辆控制， 制造业和程序化股票交易;以及 为管理真实的- 复杂应用中的时间数据。

RIA: Semantic Concurrency Control for Real-Time Object-Oriented Databases This research addresses the design of concurrency control techniques for real-time object-oriented databases. There are two components to the research: (1) development of a formal schema model of a real-time object-oriented database system; and (2) development of real-time concurrency control techniques that employ application semantics and imprecision to support enforcement of all of the forms of constraints in a real-time object-oriented database. These forms of constraints are: data object logical consistency constraints, data object temporal consistency constraints, transaction logical consistency constraints, and transaction timing constraints. The concurrency control technique uses a concurrency control component encapsulated within each object that expresses conditional compatibility and semantic locking of object methods. This project implements the semantic real-time concurrency control techniques using a prototype real-time object-oriented database system. The research is useful in real-time control applications with large amounts of time-constrained data, such as: medical intensive care patient monitoring, vehicle control, manufacturing, and programmed stock trading; as well as for introducing a better general paradigm for management of real- time data in complex applications.