涵洞工程数据库的研究

The research on engineering database of culvert

在分析涵洞设计功能的基础上,对设计数据进行分析和分类,针对不同数据特点提出涵洞工程数据库中所适用的关系数据模型、扩展的关系数据模型和超图数据模型。阐述涵洞工程数据库管理系统的功能需求和体系结构,在此基础上描述含有语义库、工程库、图形函数库和结果库等4个子数据库的涵洞工程数据库的总结构,并给出图形函数库结构。

It presents the data analysis and classification based on the analysis of the design function of culvert. For the different data characteristics, relational data model and expand of relational data model and hypegraphbased data model with suitable for engineering database of culvert have been brought up. Function request of EDBMS of culvert and system construction are provided. Total construction of engineering database of culvert are described including the language righteousness warehouse, diagram function, DLL, parts warehouse with result warehouse, etc.