INTEGRATED ACCESS METHOD FOR DIFFERENT DATA SOURCES

摘要

PROBLEM TO BE SOLVED: To integrate not only the data stored in a relational database management system but also the data stored in data sources unable to efficiently execute an inquiry such as a legacy AP(application program) and a tertiary memory and to realize a high-speed inquiry. SOLUTION: A distributed index for the data source is generated in a database hub in advance, and a distributed index application section deforms and analyzes the query by using the distributed index. The high-speed inquiry is realized for the data stored in the data sources unable to efficiently execute the inquiry.