Efficient Querying and Indexing of Moving Data Objects

Spatio-Temporal database deals with the change in position of moving objects over time. In order to ease the capturing and storing of the information about moving object, a new data type has been defined which stores the position and time as a single entity. This data type forms the basis for defining some Spatio-temporal predicates. As some Spatio-temporal queries are very difficult to write in SQL, there is need to extend SQL by defining some Spatio-temporal predicates, to make the queries simple and easier to write. To execute the queries efficiently, there is need to implement proper indexing technique. We also described about Spatio-temporal indexing techniques which is made on Spatio-temporal data type. Performance and comparisons shown by Spatio-temporal indexing technique with spatial and temporal indexing on different attributes.