"PQL: An Extended Pictorial Query Language for Querying Geographical ..."

Elaheh Pourabbas, Maurizio Rafanelli (1999)

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DOI: 10.1145/320134.320175

access: closed

type: Conference or Workshop Paper

metadata version: 2018-11-06

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Elaheh Pourabbas, Maurizio Rafanelli:
PQL: An Extended Pictorial Query Language for Querying Geographical Databases Using Positional and OLAP Operators. ACM-GIS 1999: 165-166

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