Managing Global Information in the CORDS Multidatabase System
- Per-Ake Larson ,
- Michael Bauer ,
- Patrick Martin ,
- Paul Larson
Published by International Foundation on Cooperative Information Systems
Multidatabase systems provide integrated access to autonomous, distributed, and heterogeneous database systems. As such they provide a core technology for Coopreative Information Systems. One of the main issues in developing multidatabase systems is that of managing global information such as properties of component sites and databases, component and application schemas, mappings between the schema levels, multidatabase-level access privileges, and performance statistics for the optimization of global queries. We outline the CORDS multidatabase prototype system and discuss our approach to managing global information by using an information repository based on an X.500 directory system.