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I think your plan to store each data subtype independently in a column is the right choice. As written in the book "PostGIS in Action", the use of the GeometryCollection subtype is not recommended: "In real-world applications, you should rarely define a data column as geometry-collection . Although having a collection is perfectly reasonable for storage ...


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I think you may have misunderstood the docs. A geometry collection is something of the form: GEOMETRYCOLLECTION(....). Just because you have a mix of multipoints, multilinestrings and multipolygons in the same geometry column doesn't make them a geometry collection. multis are not considered geometry collections either. If you truly plan to have ...



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