Distributed query processing strategies in Mermaid, a frontend to data management systems

The Mermaid testbed system has been developed as part of an ongoing research program at SDC to explore issues in distributed data management. The Mermaid testbed provides a uniform front end that makes the complexity of manipulating data in distributed heterogeneous databases under various data management systems (DBMSs) transparent to the user. It is being used to test query optimization algorithms as well as user interface methodology.