Definition
Applications dealing with space and time referenced data (e.g., location based services, cadastral systems, routing systems) benefit from conceptual modeling techniques that offer built-in support for the modeling of the spatial and temporal aspects of data. To support the spatial dimension, the new spatial concepts are the position, spatial properties, the fields and the spatial relationships, while for the temporal dimension, the temporal concepts of valid, transaction and existence time are needed. Applying these concepts in a meaningful way to the modeling constructs of objects, attributes, and relationships results in new modeling constructs, namely, spatial, temporal, and spatiotemporal objects, attributes, and relationships. The Spatio-temporal ER (STER) model extends the Entity-Relationship (ER) Model with the aforementioned spatiotemporal constructs.
Historical Background
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References
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Recommended Reading
Elmasri R, Navathe S (2007) Fundamental of database systems, 5th edn. Addison Wesley, Boston
Hadzilacos TH, Tryfona N (1997) Extending the entity-relationship model to capture spatial semantics. SIGMOD RECORD 26(3): 24–29
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Tryfona, N., Jensen, C.S. (2017). Spatiotemporal Database Modeling with an Extended Entity-Relationship Model. In: Shekhar, S., Xiong, H., Zhou, X. (eds) Encyclopedia of GIS. Springer, Cham. https://doi.org/10.1007/978-3-319-17885-1_1317
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