def getFieldIDs(dbid = nil, exclude_built_in_fields = false )
    fieldIDs = []
    dbid ||= @dbid
    getSchema(dbid)
    if @fields
       @fields.each_element_with_attribute( "id" ){|f|
          next if exclude_built_in_fields and isBuiltInField?(f.attributes["id"])
          fieldIDs << f.attributes[ "id" ].dup 
       }
    end
    fieldIDs   
  end
def getFieldIDs(dbid = nil, exclude_built_in_fields = false )
    fieldIDs = []
    dbid ||= @dbid
    getSchema(dbid)
    if @fields
       @fields.each_element_with_attribute( "id" ){|f|
          next if exclude_built_in_fields and isBuiltInField?(f.attributes["id"])
          fieldIDs << f.attributes[ "id" ].dup 
       }
    end
    fieldIDs   
  end
Get an array of field IDs for a table.