| 摘要 |
A method and system for providing location based data services. The present invention relates generally to a method and system for generating, storing, manipulati ng and displaying location-based data and more particularly relates to a method and system for using a unique identifier of spatial location to enable a database to become "location smart". The unique identifier comprises an identifier of location such as latitude and longitude as well as one other item of data such as a time-stamp or a sequen ce number. The unique identifier is used as a key in a database system and can be used to facilitate spatial analysis of data or to provide geographic context to data. The present invention also provides systems and methods that operate in mobile a nd wireless environments. The present invention allows end users to perform the function s of geographic information systems without having to provide sensitive data to G IS service providers or having to learn to use sophisticated GIS systems.
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