MySQL/Language/Spatial databases
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Principle
[edit | edit source ]When typing the fields, some of them represent graphical objects, and so are considered like as "Spatial". Consequently, they are manipulated by some different request than for the text.
We distinguish eight fields types[1] :
- Geometry
- Point
- LineString
- Polygon
- MultiPoint
- MultiLineString
- MultiPolygon
- GeometryCollection
And six relations between them[2] :
- Contains
- Disjoint
- Equals
- Intersects
- Overlaps
- Within
Requests
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