论文标题:异构型分布式专题军事地理数据库互操作研究
Research on Publishing Geographic Spactial Information over Web Based on Military Geography Database
论文作者 霍鹏
论文导师 王飞,论文学位 硕士,论文专业 作战指挥学
论文单位 解放军信息工程大学,点击次数 673,论文页数 56页File Size3326k
2004-04-01论文网 http://www.lw23.com/lunwen_6799327/ 异构数据库互操作;ODBC;CORBA
heterogeneous databases interoperation;ODBC;CORBA
随着专题军事地理信息数字化及数据库的普遍应用，专题地理数据库间存在异构现象。为有效利用已有数据资源和实现数据共享，有必要对异构数据库进行应用研究，异构数据库互操作不可避免。 异构数据库互操作技术是一个新兴的研究课题。本文论述了异构数据库互操作的概念和目标，分析了异构数据库互操作策略。异构数据库互操作的核心思想是数据共享和透明访问。结合专题军事地理数据集成的目前实际需求，借鉴松散耦合的思想，提出专题军事地理数据集成策略。从应用的角度来说，一个行之有效的方法是设计一个数据库互操作系统。 本文研究了异构数据库互操作关键技术。针对异构数据库模式现象，提出了公共数据模型。研究了如何异构数据库间的数据转换和抽取以及数据转换的实现过程。在关键技术研究之上，基于ODBC技术设计了一个具有友好界面和使用方面的异构数据库互操作系统，允许用户对异构数据库进行透明访问，为专题军事地理数据集成提供软件支持。 异构数据库互操作研究涉及到分布式计算，为此，本文研究了CORBA技术。基于CORBA技术的数据库互操作，从理论上来看将是实现异构数据库互操作的最佳方案。研究了基于CORBA的数据库互操作方法，并从理论和应用上探讨了异构数据库互操作中间件的设计。
With the development of military thematic geographic information digitizing and broad application of databases, heterogeneity phenomenon exists between thematic geographic databases. To make good use of existing data resources and realize data sharing, it is necessary to do application research about heterogeneous databases and heterogeneous databases interoperation is inescapable.Heterogeneous databases interoperation echnique is a new research field. The paper discussed heterogeneous databases interoperation concept and target and analyzed its strategy. Core idea of heterogeneous databases interoperation is data sharing and transparent accessing. At the angle of application, a effective method is to design a databases interoperation system.The paper studied key technique of heterogeneous databases interoperation. Aiming at heterogeneous databases mode phenomenon, common data model was put forward. It studied data conversion and extraction between heterogeneous databases and realization process. Though studies about key technique, based on ODBC, the paper designed a databases interoperation system with friendly interface. The system allows users get access to heterogeneous databases transparently and provides software support for military thematic geographic data integration.Heterogeneous databases interoperation is related to distributed computing, so the paper studied CORBA technique. Databases interoperation based on CORBA technique, from theory level,is the best method. It studied databases interoperation method based on CORBA, and, at the angle of theory and application, discussed the design of heterogeneous databases interoperation.
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