Constitutes the proceedings of the 19th British National Conference on Databases, held in Sheffield in 2002. The 11 papers and 9 posters cover query processing, data warehousing and data mining, quality and integrity, and web and distributed databases.

Invited Paper.- Have It Your Way: Personalization of Network-Hosted Services.- Query Processing.- Adaptive Query Processing: A Survey.- Improving Query Evaluation with Approximate Functional Dependency Based Decompositions.- Refereed Poster Papers.- The AutoMed Schema Integration Repository.- Global Query Processing in the AutoMed Heterogeneous Database Environment.- Tracing Data Lineage Using Automed Schema Transformation Pathways.- A System for Managing Alternate Models in Model-Based Mediation.- CREAM: A Mediator Based Environment for Modeling and Accessing Distributed Information on the Web.- An Integrated Approach to Handling Collaborative Diagram Databases on the WWW.- Handling Conceptual Multidimensional Models Using XML through DTDs.- Implementing Data Mining in a DBMS.- Fully Dynamic Clustering of Metric Data Sets.- Data Warehousing and Mining.- Real World Association Rule Mining.- Implementation and Comparative Evaluation of Maintenance Policies in a Data Warehouse Environment.- Quality and Integrity.- Establishing a Taxonomy of Quality for Use in Information Filtering.- Improving the Refined Triggering Graph Method for Active Rules Termination Analysis.- An Algorithm for Determining Related Constraints.- Web and Distributed Databases.- Retrieval Performance Experiment with the Webspace Method.- Semantic Integration and Querying of Heterogeneous Data Sources Using a Hypergraph Data Model.- A Document Database Query Language.