Mobile applications, for example for road tra\ufb03c monitoring, mobile health and animal data ecology, call for methods enabling rich and expressive representation of moving objects. This demand motivates the increasing concern for the paradigm of semantic trajectories. In this paper, I overview
related research, focusing in particular on the novel data model of symbolic trajectories proposed for the e\ufb03cient and \ufb02exible handling of semantics-aware trajectories through a Moving Object DBMS
