Towards a Visual Query System for Spatio-Temporal Databases
Valéria M. B. Cavalcanti · IGI Global eBooks · 2011
Visual Query Systems (VQS) for Spatio-Temporal Databases; which enable formulation of queries involving both spatial and temporal dimensions; are an important research subject. Existing results treat these dimensions separately and there are only a few integrated proposals. This chapter presents a VQS; called Spatio-Temporal Visual Query Environment (S-TVQE) which allows the formulation of conventional; spatial; temporal; and spatio-temporal database queries in an integrated environment. With S-TVQE the user; instead of querying the database by textual query languages will interact with the system by visual operators for the statement of the query conditions. The tool provides a visualization of the results in different formats such as maps; graphics; and tables.