Title :
A Range Query Model Based on DHT in P2P System
Author :
Dan, Wang ; Maozeng, Li
Author_Institution :
Coll. of Comput. Sci., Beijing Univ. of Technol., Beijing
Abstract :
A peer-to-peer (P2P) system has emerged as one of the most successful ways to share resources in distributed environment, and DHT(distributed hash table) is used as an effective approach to locate shared resources in a P2P system. This paper describes an extended DHT model by combining DHT with B+ tree. The sharing resources are represented by their attributes. Each query request is associated with ranges in one or more attributes, and B+ tree is introduced to organize the values of each attribute. In order to implement and verify our model, chord is chosen as the underlying DHT system. In addition to equality queries, this model also makes it possible to execute range queries over a DHT. The relevant technologies mapping from B+ trees to chord system are described. The node adding and leaving process and range query process are illustrated.
Keywords :
cryptography; peer-to-peer computing; query processing; B+ tree; P2P system; chord system; distributed hash table; peer-to-peer system; range query model; Communication system security; Computer science; Computer security; Distributed computing; Educational institutions; Peer to peer computing; Power system modeling; Scalability; Vegetation mapping; Wireless communication; DHT; Peer to Peer; query;
Conference_Titel :
Networks Security, Wireless Communications and Trusted Computing, 2009. NSWCTC '09. International Conference on
Conference_Location :
Wuhan, Hubei
Print_ISBN :
978-1-4244-4223-2
DOI :
10.1109/NSWCTC.2009.55
