异构信息资源库的构建及其关键技术实现

异构数据资源库的构建及其关键技术已成为系统集成和信息重用技术的重要内容．为了实现异构数据资源库底层信息的集成及共享，针对不同应用系统的异构数据，采用逆序树结构，改进了树型结构的存储方式，以逆序树加层号的方式实现任意层次树状结构的关系数据库存储，提高了数据库存储的树型结构的读取还原速度，解决了快速重建技术；在关系型数据库中，结合树结构设计了基于二进制大对象(BLOB)的相对抽象、通用的数据存储格式；结合基于BLOB存储及树状结构管理的方法，提出了对异构数据的资源组织、资源访问和安全管理等一系列关键技术的实现方案；在此基础上，构建了面向快速设计的网络资源库平台．该平台有效地实现了信息资源的存储、共享、服务和管理功能，提高了信息资源的综合应用水平．

Design and Construction Technology of Resource Database in Heterogeneous Data Formats

A new method for storing tree structures with unlimited depth and managing data with different formats in relation database is described in this paper, and a resource database management system is built with the aim of managing and sharing design data with different formats in a rapid design platform. Binary Large Object (BLOB) is used to store different formats of data, especially multimedia data, in the same database structure. Reverse order tree and the layer number of the tree node are used to store tree structures with unlimited depth in relation database. As a consequence, the resource data can be effectively and safely managed in the resource base platform based on network. The resource database constructed proved its advantages in terms of data utility, data re-use and data security.