A foundation for representing and querying moving objects
ACM Transactions on Database Systems (TODS)
The TSQL2 Temporal Query Language
The TSQL2 Temporal Query Language
Temporal Triggers in Active Databases
IEEE Transactions on Knowledge and Data Engineering
Modeling and Querying Moving Objects
ICDE '97 Proceedings of the Thirteenth International Conference on Data Engineering
Developments in Spatio-Temporal Query Languages
DEXA '99 Proceedings of the 10th International Workshop on Database & Expert Systems Applications
SQL extension for spatio-temporal data
The VLDB Journal — The International Journal on Very Large Data Bases
The t4sql temporal query language
Proceedings of the sixteenth ACM conference on Conference on information and knowledge management
Formal and conceptual modeling of spatio-temporal granularities
IDEAS '09 Proceedings of the 2009 International Database Engineering & Applications Symposium
SQLST: a spatio-temporal data model and query language
ER'00 Proceedings of the 19th international conference on Conceptual modeling
ST4SQL: a spatio-temporal query language dealing with granularities
Proceedings of the 27th Annual ACM Symposium on Applied Computing
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In Pozzani and Combi proposed ST4SQL, an SQL-based query language extending SQL with new constructs for querying spatio-temporal data. In particular ST4SQL deals with different temporal and spatial semantics, allowing one to specify how the system has to manage temporal and spatial dimensions for evaluating queries. Moreover, the query language introduces new constructs for grouping data with respect to temporal and spatial dimensions. All proposed constructs take into account data qualified with granularities [2]. In this paper we briefly present ST4SQL and we present, also through some examples, its semantics with respect to the standard SQL one.