Construction of Railway Metadata Management System Based on Metadata Content Model and CWM Exchange Mechanism

The large number of systems of the railway in China produced much complex and diverse data which are in various formats, scattered storage, and have a big difficulty in data sharing. Existing researches indicate that metadata management is useful to solve these problems. This paper by analyzing the types of metadata, makes a metadata content model and creates a standard for metadata standardization and exchange based on the CWM for the metadata of railway. Besides, we build the architecture and functions of the metadata system, and successfully designed a metadata management system which is beneficial to the data management for the railway systems.