| 清江防洪与梯级调度仿真系统数据库设计 |
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| 引用本文： | 李娅,杨峰,董朝霞.清江防洪与梯级调度仿真系统数据库设计[J].水利水电科技进展,2004,24(4):29-32. |
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| 作者姓名： | 李娅 杨峰 董朝霞 |
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| 作者单位： | 华中科技大学水电数字化工程学院,湖北,武汉,430074 |
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| 基金项目： | 国家自然科学基金资助项目(50079006) |
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| 摘 要： | 介绍清江防洪与梯级调度仿真系统数据库的设计方案.为确保系统的安全稳定运行,系统数据库采用了内、外编码映射变换技术进行站码管理,设计完善的预报结果表,保证各子系统的输入、输出数据正确和运行结果可靠;采用冗余库技术,建立多数据库方式,以空间来换取时间效率.为数据库管理子系统设计了数据库管理、站码管理、数据整编、数据查询等功能模块;并采用消除冗余数据,建立索引机制,调整内存分配及相关的初始参数等方法优化系统数据库性能.
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| 关 键 词： | 防洪调度系统 Oracle数据库 仿真 站码 冗余库 清江 |
| 文章编号： | 1006-7647(2004)04-0029-04 |
| 修稿时间： | 2003年11月18 |
Database design for simulation system of Qingjiang River flood control and cascade dispatching |
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| LI Ya,et al.Database design for simulation system of Qingjiang River flood control and cascade dispatching[J].Advances in Science and Technology of Water Resources,2004,24(4):29-32. |
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| Authors: | LI Ya |
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| Abstract: | An introduction is given to the design scheme for the database, in which the inner coding-outer coding transform technique is adopted for code management, and perfect tables for predicted result are designed, so as to ensure the correctness of input and output data and reliability of the operation of the system. Besides, the redundant technique is applied and multi-database operation mode is developed to improve the efficiency of the system. Furthermore, some functional modules, including database management, code management, data reorganization, and data query, are designed for the database system. Finally, some measures, such as the removal of redundant data, establishment of index mechanism, and adjustment of EMS memory and initial parameters, are taken for optimization of the database performance of the system. |
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| Keywords: | flood control and dispatching system Oracle database simulation code redundant database Qingjiang River |
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