Invited Talk (Shared with DBPL) -- Patterns and Types for Querying XML Documents -- Constraints and Views -- Checking Functional Dependency Satisfaction in XML -- A Theoretic Framework for Answering XPath Queries Using Views -- Labeling and Path Evaluation -- A Path-Based Labeling Scheme for Efficient Structural Join -- The BIRD Numbering Scheme for XML and Tree Databases – Deciding and Recon…