Database Programming Languages [electronic resource] : 8th International Workshop, DBPL 2001, Frascati, Italy, September 8-10, 2001. Revised Papers /

Invited Contribution -- Typechecking for Semistructured Data -- Semistructured Data -- Optimization Properties for Classes of Conjunctive Regular Path Queries -- View-Based Query Answering and Query Containment over Semistructured Data -- Model-Checking Based Data Retrieval -- OLAP and Data Mining -- A Temporal Query Language for OLAP: Implementation and a Case Study -- Attribute Metadata for Relational OLAP and Data Mining -- On Monotone Data Mining Languages -- XML -- Reasoning about Keys for XML -- TAX: A Tree Algebra for XML -- A Rule-Based Querying and Updating Language for XML -- Spatial Databases -- Linear Approximation of Semi-algebraic Spatial Databases Using Transitive Closure Logic, in Arbitrary Dimension -- A Theory of Spatio-temporal Database Queries -- Systems, Schema Integration, Index Concurrency -- An Application-Specific Database -- A Model Theory for Generic Schema Management -- View Serializable Updates of Concurrent Index Structures -- User Languages -- SQL4X: A Flexible Query Language for XML and Relational Databases -- ERX-QL: Querying an Entity-Relationship DB to Obtain XML Documents -- Rules -- Optimising Active Database Rules by Partial Evaluation and Abstract Interpretation -- Simulation of Advanced Transaction Models Using GOLOG.