Data dictionary based wide area data resource management method

The invention relates to a data dictionary based wide area data resource management method. The data dictionary based wide area data resource management method includes preprocessing existing data resources under the condition that existing data and applications are undamaged and unaffected, generating an independent dictionary entity with data resource characteristics, designing a data dictionary management mechanism, indexing data by a multi-level data dictionary way, compressing the data dictionary by the similar clustering technology and optimizing the data retrieval process; deploying the data dictionary in a wide area network system, supplying data index services, locating the data resources by a network host through the data dictionary and accessing the data entity. By the data dictionary based wide area data resource management method, unified maintenance and efficient sharing of the data resource among nodes of the wide area network are realized and instantaneity and uniformity of data access of clients are ensured by the aid of the unified and universal data dictionary. The data resources within the whole network can be interconnected and shared, utilization rate of the data resources is increased and management efficiency of the data resources is improved.