Research And Application Of Remote Data Access Middleware

With the rapid development of Internet and enterprise requirements for distributed processing, information processing systems need higher efficiency of data interaction, data security and system load balance. By its complexity, Data Access Middleware shield the complexity of network and operating systems, so users can visit internet and access data transparently. But, how to use various of middleware architecture in special domain and to resolve the problem of domain application is very important when designing a practical system.This thesis firstly analyses the problems that hydrological information system is facing while applying data access middleware. Combining the development trend of current middleware technologies, the article conceives a model of hydrological information remote data access middleware based on CORBA. As the frequency of data query is far more than that of data update, the model processes the data query and update separately and applies the main memory database technology in the data query model, which improves the efficiency of simultaneous data accessing. Finally, the thesis discuss the application of this model in the "Flood Monitor System", and evaluate its usability and efficiency by testing. It provides a model that can be referenced in this domain.