| 一种面向主动对象的实时数据模型 |
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| 引用本文： | 郑耿,刘国平.一种面向主动对象的实时数据模型[J].计算机工程,2005,31(20):16-18,21. |
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| 作者姓名： | 郑耿 刘国平 |
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| 作者单位： | 中科院自动化所复杂系统与智能科学实验室,北京,100080 |
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| 基金项目： | 中科院知识创新工程、国家承点基础研究和发展资助项目（2002CB312200） |
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| 摘 要： | 针对支持复杂实时应用的实时数据库管理系统，提出了一种面向主动对象的实时数据模型AOORT，将面向对象实时性和主动性更好地集成在一起。模型由对象、关系和规则3部分组成。对象用来对带有时间特性的实体进行建模，扩展了传统对象来提供实时和主动特征；关系描述了对象之间的联系情况；规则体现了数据库的主动性，并集成了时间约束。最后以一个简单网络化控制系统中的实时数据采集和监控子系统为例，展示了AOORT模型的具体应用。
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| 关 键 词： | 主动对象 实时数据库 主动数据库 数据模型 规则 |
| 文章编号： | 1000-3428（2005）20-0016-03 |
| 收稿时间： | 2004-09-15 |
| 修稿时间： | 2004-09-15 |
A Real-time Data Model of Active Object Oriented |
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| ZHENG Geng,LIU Guoping.A Real-time Data Model of Active Object Oriented[J].Computer Engineering,2005,31(20):16-18,21. |
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| Authors: | ZHENG Geng LIU Guoping |
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| Affiliation: | Laboratory of Complex Systems and Intelligence Science, Institute of Automation, Chinese Academy of Sciences, Beijing 100080 |
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| Abstract: | This paper presents a real-time data model of active object oriented(AOORT) which incorporates object-orientation,real-time,and reactive behavior for complicated real-time databases.AOORT is composed by objects,relationships and rules.Objects are used for modeling real-world entities,extending traditional object model to support time-constrained data and activity.Relationships are used for modeling relationships among objects.Rules are used for modeling logical and temporal consistency constraints and activities of objects.Finally,the paper illustrates how AOORT can be used in practice,a supervisory control and data acquisition system in a simple networked control system is used. |
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| Keywords: | Active object Real-time database Active database Data model Rule |
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