Extending interoperability into the real-time domain

In recent years, substantial effort has been made in researching and developing interoperable data management systems. The major focus has been on data model mapping, communication protocols, and database integration including schema integration, query processing, consistency management, and security management. However, little attention has been paid to integration of data management systems that have real-time characteristics. Interoperability must also deal with real-time issues. The author identifies a number of research issues in integrating real-time data management systems. Since these issues do not exist in either traditional distributed database systems or multi-databases, they must now be addressed in the context of real-time system integration