Usually, coordinate values are stored in numeric columns (float, decimal, or even integer), and the specific type will not affect the code presented here.
通常，坐标值存储在数字列中(浮点、小数，甚至是整数)，具体的类型并不影响这里给出的代码。
The coordinate values are numeric (decimal, float, etc.), not character strings.
坐标值是数字(小数、浮点数等)，不是字符串。
In the terminology of the Spatial Extender, this is the Spatial Reference system (SRS), a combination of an earth-based coordinate system and a set of numeric conversion parameters.
在Spatial extender术语中，这是SpatialReferenceSystem (SRS)，它组合了基于地球的坐标系和一组数字转换参数。
In the terminology of the Spatial Extender, this is the Spatial Reference system (SRS), a combination of an earth-based coordinate system and a set of numeric conversion parameters.
在Spatial extender术语中，这是SpatialReferenceSystem (SRS)，它组合了基于地球的坐标系和一组数字转换参数。
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