GdaDataModelHash An implementation of #GdaDataModel based on a hash table Unlike #GdaDataModelArray, this data model implementation stores the #GdaRow in a hash table. So it only retrieves from the database backend exactly the requested rows (while in GdaDataModelArray you have to retrieve all the rows until the one requested). @parent_class: @cols: @Returns: @model: @rownum: @row: @values: @model: @cols: @model: