books.google.com.au - Database transformations consist of queries and updates which are two fundamental types of computations in any databases - the first provides the capability to retrieve data and the second is used to maintain databases in light of ever-changing application domains. This dissertation aims to lay down...http://books.google.com.au/books/about/Logical_Foundations_of_Database_Transfor.html?id=1ysHiIpL4PQC&q=con(r&utm_source=gb-gplus-shareLogical Foundations of Database Transformations for Complex-value Databases
