Keyword Join: Realizing Keyword Search in P2P-based Database Systems
Author(s)
Yu, Bei
Liu, Ling
Ooi, Beng Chin
Tan, Kian Lee
Date Issued
January 2005
Series/Report no.
Computer Science (CS);
Abstract
In this paper, we present a P2P-based database sharing system that provides information sharing capabilities through keyword-based search techniques. Our system requires neither a global schema nor schema mappings between different databases, and our keyword-based search algorithms are robust in the presence of frequent changes in the content and membership of peers. To facilitate data integration, we introduce keyword join operator to combine partial answers containing different keywords into complete answers. We also present an efficient algorithm that optimize the keyword join operations for partial answer integration. Our experimental study on both real and synthetic datasets demonstrates the effectiveness of our algorithms, and the efficiency of the proposed query processing strategies.
Subjects
keyword join
keyword query
Peer-to-Peer
database
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