Research of the complex multi-attribute queries on the index structure of overlay network

How to process the complex query on multi-attribute data in the large-scale distributed system which has good scalability and reliability like in the general public relational database is still a problem. This paper presents a multi-attribute query processing technology based on the index structure of a Chord overlay network. This technology makes use of Karnaugh map to compute the node where the query results lie, and sends the query to the corresponding node through the multicast tree, by which way achieving the fast routing between adjacent data. Tests show that the method has an effectiveness and efficiency when deals with a Multi-attribute query.