Invited Talks.- Topological Queries.- Research Issues in Spatio-temporal Database Systems.- Looking Both SSD 1999 ± 10.- Multi-resolution and Scale.- Generalizing Graphs Using Amalgamation and Selection.- Data Structures for Simplicial Multi-complexes.- Spatial Indexing with a Scale Dimension.- Indexing.- A Space-Filling Curve for Objects with Spatial Extension.- A Generalized R-Tree Bulk-Insertion Strategy.- Moving Objects and Spatio-temporal Data.- Capturing the Uncertainty of Moving-Object Representations.- Dynamic Spatial Clustering for Intelligent Mobile Information Sharing and Dissemination.- On the Generation of Spatiotemporal Datasets.- Spatial Data Mining and Classification.- Efficient Polygon Amalgamation Methods for Spatial OLAP and Spatial Data Mining.- Efficiently Matching Proximity Relationships in Spatial Databases.- 3D Shape Histograms for Similarity Search and Classification in Spatial Databases.- Spatial Join.- Multi-way Spatial Joins Using Methodology and Performance Evaluation.- Algorithms for Joining R-Trees and Linear Region Quadtrees.- Algorithms for Performing Polygonal Map Overlay and Spatial Join on Massive Data Sets.- A Performance Evaluation of Spatial Join Processing Strategies.- Uncertainty and Geologic Hypermaps.- Abduction and Deduction in Geologic Hypermaps.- Uncertainty Management for Spatial Datain Fuzzy Spatial Data Types.- Industrial and Visionary Applications Track.- Oracle8i Experiences with Extensible Databases.- An Exchange System for Cadastral Information.- Requirements of Traffic Telematics to Spatial Databases.