Message from Demo Chairs

Starting with the core data engineering demonstrations, Jaber and Voronkov present UNIDOOR, a deductive object-oriented database system (DOOD). Its distinctive features include a scalable persistent store with crash recovery, and database integrity and transaction control facilities in a multi-user environment. Cabibbo, Panella and Torlone introduce DaWaII (Data Warehouse IntegratIon), a tool for the integration of multidimensional data, allowing users to combine independently developed data warehouses. ConQueSt, a constraint-based querying system suited for the intrinsically exploratory nature of pattern discovery is demonstrated by Bonchi et al. Users may specify constraints to effectively steer the discovery process toward potentially interesting patterns, while the system exploits these to reduce the cost of pattern mining. In their demonstration of MAPLE, Wei-Shinn Ku et al. focus on the efficient sharing of query results cached in the local storage of mobile peers. In the SIPPER system, Shuigeng Zhou et al. demonstrate the efficient and effective content-based searching in structured P2P networks. In their demonstration of QPipe, Ailamaki, et al. show a new, versatile, operator-centric relational query engine that can detect and exploit overlap across concurrent queries at run time. Efficient, real time query processing on large spatial networks is demonstrated by Sankaranarayanan et al. Last, but not least in the session on core data engineering demonstrations, Chen et al. present the cgmOLAP server, the first fully functional parallel OLAP system able to build data cubes at a rate of more than 1 Terabyte per hour.