The refereed proceedings of the 8th International Symposium on Spatial and Temporal Databases, SSTD 2003, held at Santorini Island, Greece in July 2003.

Keynote Address.- Data Modeling for Mobile Services in the Real World.- Access Methods.- Performance Evaluation of Main-Memory R-tree Variants.- The BTR-Tree: Path-Defined Version-Range Splitting in a Branched and Temporal Structure.- Bkd-Tree: A Dynamic Scalable kd-Tree.- Advandced Query Processing.- Efficient Object-Relational Interval Management and Beyond.- Efficient k-NN Search on Streaming Data Series.- On Query Processing and Optimality Using Spectral Locality-Preserving Mappings.- Categorical Range Queries in Large Databases.- Probabilistic Spatial Database Operations.- Validity Information Retrieval for Spatio-Temporal Queries: Theoretical Performance Bounds.- Data Minning and Warehousing.- Exploiting the Multi-Append-Only-Trend Property of Historical Data in Data Warehouses.- Cross-Outlier Detection.- Accessing Scientific Data: Simpler is Better.- Distance-Based Queries.- Optimization of Spatial Joins on Mobile Devices.- On Spatial-Range Closest-Pair Query.- Evaluation of Iceberg Distance Joins.- Mobility and Moving Points Management.- Indexing Objects Moving on Fixed Networks.- On-Line Discovery of Dense Areas in Spatio-temporal Databases.- Accuracy and Resource Consumption in Tracking and Location Prediction.- Modeling and Languages.- Region-Based Query Languages for Spatial Databases in the Topological Data Model.- Query Pre-processing of Topological Constraints: Comparing a Composition-Based with Neighborhood-Based Approach.- Logical Data Expiration for Fixpoint Extensions of Temporal Logics.- A Multi-representation Spatial Data Model.- Similarity Processing.- Learning Similarity with Fuzzy Functions of Adaptable Complexity.- Spatial Similarity Queries with Logical Operators.- Exploiting Spatial Autocorrelation to Efficiently Process Correlation-Based Similarity Queries.- Systems and Implementation Issues.- Automatically Annotating and Integrating Spatial Datasets.- Location- and Time-Based Information Delivery in Tourism.- Building a Robust Relational Implementation of Topology.