Indicates if the Data Laboratory API behaviour allows to set as null a value of the given column of a table.
The behaviour is: Only values of columns with AttributeOrigin
of type DATA
or a node/edge label column can be set to null. Edge weight can't be null
Also, columns with a DYNAMIC
or TIME_INTERVAL
AttributeType are not allowed to be cleared since they are only used for dynamic attributes purposes.
@param column Column to theck its values can be changed
@return True if the column values can be changed, false otherwise