Scalable and Extensible Cooperative Information Systems
Abstract
Conventional query answering requires the user to have detailed knowledge of the database schema. As the size and the number of types of databases in the system increase, it becomes impractical for the user to know the entire database schema. This effort developed a cooperative information system that uses a knowledge base to provide approximate matching of different data structures and schemas. Further, based on the user profile and application, the system is capable of query relaxation and modification, and is able to provide approximate answers when an exact query answer is not available. The user can also provide explicit relaxation parameters such as approximate range, near to, similar to, as well as relaxation. A prototype was developed, CoBase, that supports structured data for transportation applications, and have also extended the cooperative methodology to the image domain.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1999
- Accession Number
- ADA369123
Entities
People
- Wesley W. Chu
Organizations
- University of California, Los Angeles