基于规则驱动的地理信息元数据管理系统的设计与实现

发布时间：2018-03-30 01:30

本文选题：地理信息元数据　切入点：元数据管理系统　出处：《西安电子科技大学》2013年硕士论文

【摘要】：近年来，在地图数据领域，如何管理海量的地理信息、提高信息的使用效率和搜索效率已经成为当前计算机界的热门课题。元数据管理系统是地理信息系统中进行信息整合的工具，如何设计出一种高效、实用的地理信息元数据管理系统是这些课题研究中亟需解决的关键问题。本文通过研究多种地图实体数据的元数据，针对传统元数据管理系统的缺点和元数据本身的特点，基于规则驱动的思想，设计了一种高效实用并可扩展的地理信息元数据管理系统。该系统可将各种空间数据的元数据按属性进行分类管理，并写入XML配置文件中。系统通过读取配置文件动态生成客户端界面来对元数据系统进行管理。该系统可实现对元数据的入库、查询、多功能显示、多数据源支持、版本定制、目录树定制等功能。与传统元数据管理系统相比，该系统不仅便于扩充新型数据，而且在保证用户访问质量的同时也提高了查询效率。在上述系统的实现上，本文采用开源软件Qt开发客户端，采用国产数据库开发软件“达梦”开发数据库系统，，具有较好的可扩展性和跨平台性。经过在实际科研项目中的应用和测试，结果表明该系统能够稳定、高效的运行，完全达到了预期的效果。该系统的实现在元数据管理软件的国产化研究历程中具有重要意义。
[Abstract]:In recent years, in the field of map data, how to manage massive geographic information, improve the efficiency of information use and search efficiency has become a hot topic in the computer field.Metadata management system is a tool for information integration in GIS. How to design an efficient and practical GIS is the key problem that needs to be solved.In this paper, we study the metadata of a variety of map entities, aiming at the shortcomings of the traditional metadata management system and the characteristics of the metadata itself, based on the idea of rule driven.A high efficient and extensible geographic information metadata management system is designed.The system can classify and manage the metadata of various spatial data by attributes and write them into the XML configuration file.The system manages the metadata system by reading the configuration file and generating the client interface dynamically.The system can realize the functions of metadata storage, query, multi-function display, multi-data source support, version customization, catalog tree customization and so on.Compared with the traditional metadata management system, this system is not only easy to expand the new data, but also improves the query efficiency while ensuring the user access quality.In the implementation of the above system, this paper uses the open source software QT to develop the client, and the domestic database development software "Dameng" to develop the database system, which has good expansibility and cross-platform.Through the application and test in the actual scientific research project, the results show that the system can run stably and efficiently, and achieves the expected effect completely.The realization of this system is of great significance in the process of localization of metadata management software.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P208;TP311.52

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