Research of Emergency Information Resourse Organization Based on Metadata

Introducing metadata management mechanism to build emergency information resources, the paper establishes the data storage metadata, data exchange metadata and data display metadata, and integrates the data of E-government inside-outside network.Information integration based on metadata will solve the problem that distributed, heterogeneous emergency information integrate and share difficultly.The method is practiced and evidenced in the development of Dalian Emergency Management Development Platform.Practice shows that information organization and management methods based on metadata management can enhance the flexibility of data manipulation of emergency management decision support system, and expansibility, portability, easy maintenance and data consistency of heterogeneous system data.