A data model and data structures for moving objects databases
SIGMOD '00 Proceedings of the 2000 ACM SIGMOD international conference on Management of data
A foundation for representing and querying moving objects
ACM Transactions on Database Systems (TODS)
Efficient Querying and Animation of Periodic Spatio-Temporal Databases
Annals of Mathematics and Artificial Intelligence
Modeling and Querying Moving Objects
ICDE '97 Proceedings of the Thirteenth International Conference on Data Engineering
Cost and Imprecision in Modeling the Position of Moving Objects
ICDE '98 Proceedings of the Fourteenth International Conference on Data Engineering
Plug and Play with Query Algebras: SECONDO-A Generic DBMS Development Environment
IDEAS '00 Proceedings of the 2000 International Symposium on Database Engineering & Applications
Moving Objects Databases: Issues and Solutions
SSDBM '98 Proceedings of the 10th International Conference on Scientific and Statistical Database Management
A Tool for Nesting and Clustering Large Objects
SSDBM '00 Proceedings of the 12th International Conference on Scientific and Statistical Database Management
Recursive Representation of Periodicity and Temporal Reasoning
TIME '04 Proceedings of the 11th International Symposium on Temporal Representation and Reasoning
SECONDO: An Extensible DBMS Platform for Research Prototyping and Teaching
ICDE '05 Proceedings of the 21st International Conference on Data Engineering
A conceptual view on trajectories
Data & Knowledge Engineering
An Ontology-Based Approach for the Semantic Modelling and Reasoning on Trajectories
ER '08 Proceedings of the ER 2008 Workshops (CMLSA, ECDM, FP-UML, M2AS, RIGiM, SeCoGIS, WISM) on Advances in Conceptual Modeling: Challenges and Opportunities
Evaluating Exceptions on Time Slices
ER '09 Proceedings of the 28th International Conference on Conceptual Modeling
On the efficient construction of multislices from recurrences
SSDBM'10 Proceedings of the 22nd international conference on Scientific and statistical database management
| Hi-index | 0.01 |
In the real world, lots of objects with changing position can be found. Some of them repeat the same movement several times, called periodic movements. Examples include airplanes, trains, planets, and marine turtles. This paper describes a model for representing the periodic movements to be stored in a database system, exploiting the information about the repetitions. The model is generic enough to represent any kind of movement, not being restricted to objects with repetitions in their movement. We present algorithms to detect the repetitions and to convert to the periodic representation as well as the implementation of some operations on such representation. We show, in an experimental evaluation against the so-called flat representation, that the approach presented in this paper significantly improves the performance of query processing in a database system when dealing with objects with some periodic movement. We also show that, for the worst case where the objects do not follow any periodic movement at all, our approach still performs acceptably.