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Spatio-temporal extensions to data models have been an active area of research for a number of years. To date, much of this work has focused on the relational data model, with object data models receiving far less consideration. Where descriptions of such object models do exist, there is currently a lack of systems which build upon these models to produce database architectures that address the broad spectrum of issues related to the delivery of a fully functional spatio-temporal DBMS. Thisdoi:10.1145/512161.512188 dblp:conf/gis/GriffithsFPMHWJS01 fatcat:4karl5xdiffwjmkyecprlznn4a