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题名:
空间数据管理与维护系统设计
作者: 靳文波
答辩日期: 2008-06-03
导师: 李磊
专业: 计算机应用技术
授予单位: 中国科学院研究生院
授予地点: 中国科学院软件研究所
学位: 硕士
关键词: 数据管理 ; 空间数据管理 ; XML ; 数据交换 ; 中间件
其他题名: The Designation of the Spatial Data Management & Maintenance System
分类号: 暂无
索取号: 暂无
部门归属: 综合信息系统技术国家重点实验室
摘要: 空间数据管理和维护技术是卫星数据应用系统的关键技术之一,对于推动卫星数据应用的发展有不可或缺的重要意义。本文在分析数据管理的各种先进技术的基础上,设计了卫星地面应用系统中的数据管理维护解决方案;讨论了该解决方案的具体设计实现。主要工作有:一、 系统架构:本文设计了层次式的系统架构,将系统从上到下分为数据应用层、数据访问接口层、逻辑数据层、物理数据层等,并对各层之间的功能和之间的交互做了明确定义。二、 数据统一访问:本文设计了数据访问接口层,向下层负责操作逻辑数据,向上层用户提供一个易用的统一的数据访问接口。该接口层屏蔽了底层数据格式和存储等差异,支持数据的统一存取,提供透明的数据访问,降低了系统之间的耦合度。三、 数据操作实现:本文基于XML设计了数据用户和数据管理维护系统之间数据交换的格式。在数据访问接口层实现了从XML格式请求到SQL语句(或文件API调用)的转换逻辑以实现各种数据操作请求,提高了系统可扩展性。论文还设计了多种数据安全方法相结合的数据安全策略,提高了系统中数据的安全性。数据管理维护系统的开发和测试过程表明,该方案基本满足卫星地面应用系统中数据管理和维护的需求。
英文摘要: As an important research field, the technology of spatial data management and maintenance is one of the key issues of the satellite data application system. It is significant in prompt the development of satellite data application system. Based on the analysis of the current research on the spatial data management and the specific application context, this dissertation prompts a solution of the spatial data management and maintenance in a certain satellite application system, and addresses three issues of the key technologies in spatial data management. Firstly, the designation of the architecture of the spatial data management and maintenance system is discussed. Several typical architectures are analyzed, and a four-tier architecture is put forward, and the solution of the spatial data management and maintenance system is prompted based on this architecture. In this architecture, the four tiers are the data application tier, the data accessing interface, logic data tier, and the physical data tier; and defined the function and the interactions between these tiers. Secondly, the uniform data access is addressed. The data access interface tier is prompted to realize the uniform data access, which deals with the operation of the data in data base, or file system, and supply a uniform interface for the upper tier. The middleware make the data form and data storage transparent to the users, and supports the uniform data access, and more over, lowers the coupling of the system. At last, the realization of the data operation is focused on. A data exchange form is designed based on the XML, which is used to exchange data between the clients and the spatial data management and maintenance system. Data access interface implements the translation from requests in XML to SQL sentences ( or file system API callings) according to the SQL syntax(file system APIs), and fulfill the data operations. Moreover, several methods are adopted in the system, which ensure the security of the data within the system. The development and the test of the system verified that the solution is practicable and capable to fulfill the request of the satellite application system. And the study is helpful for the further development of the satellite application system.
内容类型: 学位论文
URI标识: http://ir.iscas.ac.cn/handle/311060/6392
Appears in Collections:综合信息系统技术国家级重点实验室 _学位论文

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10001_200528015029105靳文波_paper.doc(2636KB)----限制开放-- 联系获取全文

Recommended Citation:
靳文波. 空间数据管理与维护系统设计[D]. 中国科学院软件研究所. 中国科学院研究生院. 2008-06-03.
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