The research on engineering database of culvert

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 hypegraph-based 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.