PQL: An Extended Pictorial Query Language for Querying Geographical Databases Using Positional and OLAP Operators.

@inproceedings{DBLP:conf/gis/PourabbasR99,
  author    = {Elaheh Pourabbas and
               Maurizio Rafanelli},
  editor    = {Claudia Bauzer Medeiros},
  title     = {PQL: An Extended Pictorial Query Language for Querying Geographical
               Databases Using Positional and OLAP Operators},
  booktitle = {ACM-GIS '99, Proceedings of the 7th International Symposium on
               Advances in Geographic Information Systems, November 2-6, 1999,
               Kansas City, USA},
  publisher = {ACM},
  year      = {1999},
  pages     = {165-166},
  ee        = {db/conf/gis/PourabbasR99.html, http://doi.acm.org/10.1145/320134.320175},
  crossref  = {DBLP:conf/gis/99},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

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