Design and Implementation of a Peer-to-Peer Data Quality Broker

Abstract

Data quality is becoming an increasingly important issue in environments characterized by extensive data replication. Among such environments, this paper focuses on Cooperative Information Systems (CISs), for which it is very important to declare and access quality of data. Specifically, we describe the detailed design and implementation of a peer-to-peer service for exchanging and improving data quality in CISs. Such a service allows to access data and related quality distributed in the CIS and improves quality of data by comparing different copies of the same data. Some experiments on real data will show the effectiveness of the service and the performance behavior.