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Mobility Data by Esteban Zimányi, Stefano Spaccapietra, Chiara Renso

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3

Trajectory Databases

Ralf Hartmut Güting, Thomas Behr, and Christian Düntgen

3.1 Introduction

In this chapter, we consider the problem of modeling and representing trajectories in the context of database systems. Since about 1995 there has been research on moving objects databases (MODs), also termed spatio-temporal databases. The general goal has been to allow one to represent moving entities in databases and to enable a user to ask all kinds of questions about such movements. This requires extensions of the DBMS data model and query language. Further, DBMS implementation needs to be extended at all levels, for example, by providing data structures for representation of moving objects, efficient algorithms for query operations, indexing ...

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