The Database Group @ University of Toronto  The Data Exchange Project
     Project Description | People | Publications | Systems 
         
 
  Project Description
 
 Data exchange is the problem of taking data structured under a source schema and creating an instance of a target schema that reflects the source data as accurately as possible. In this project, we address foundational and algorithmic issues related to the semantics of data exchange and to the query answering problem in the context of data exchange. These issues arise because, given a source instance, there may be many target instances that satisfy the constraints of the data exchange problem, or none at all.
 
  People
 
 
  Publications
 
 
  Systems
 The Clio system   external link   implements many of these ideas.
 
Copyright © 2013 The Database Group @ University of Toronto | Last Updated February 20, 2015