<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE qgisgrassmodule SYSTEM "http://mrcc.com/qgisgrassmodule.dtd"><qgisgrassmodulelabel="Assign new value as result of operation on columns to column in attribute table"module="v.db.update"><optionkey="map"layeroption="layer"/><fieldkey="column"layer="map"type="integer,double,varchar,string"label="Attribute field"/><fieldkey="query_column"/></qgisgrassmodule>