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Summary and future work
lConclusions
uNeed for spatio-temporal database types and operations
uSpatio-temporal operations
ámetric queries (minimum Euclidean distance)
áintersection-queries
uApplications
u
lFuture Work
uEnhance existing operations through geometric filters and index support
uExtend conceptual model: more operations on spatio-temporal types
uNew  applications (kinematics of landform)
u