呵呵,研究过,不敢多说,给你一点线索吧GIS (Geometrical data) Version 4.1 includes support for a subset of the SQL92 with Geometry Types environment proposed by the Open GIS Consortium. This allows for efficiently storing and manipulating spatial data, including geographic data. Open GIS Consortium http://www.opengis.org/
Thank you shuixin13(犬犬(心帆)) .But Gist is not Geometrical data, it is Generalized Search Tree.
Version 4.1 includes support for a subset of the SQL92 with Geometry Types environment proposed by the Open GIS Consortium. This allows for efficiently storing and manipulating spatial data, including geographic data.
Open GIS Consortium
http://www.opengis.org/