A method, system and medium for accepting geospatial data queries through an interface allowing dynamic predicates are disclosed. The geospatial data queries are translated into one or more intermediate formats, and then the intermediate format is provided to one or more geospatial data servers. Each of the one or more geospatial data servers will receive the appropriate language and syntax for which it was designed. Each of the one or more geospatial data servers will simultaneously process the request and, when processing is complete, render an appropriate result from that geospatial data server and application to an end user.
An electronic system provides a plurality of address components arranged in a plurality of mutually exclusive groups, and maintains for each of a plurality of electronic network users a respective group assignment specifying one of the groups that is determined by assignment criteria. Each such group assignment can change over time as a function of the assignment criteria, and the assignment criteria is configured so that every user is initially assigned to a predetermined one of the groups. The electronic system allocates to each user over time a sequence of address components from the group specified by the current group assignment of that user.