text: --
  -- Custom variables.
  --
  CREATE TABLE customvariables (
    customvariable_id serial,
    host_id int default NULL,
    name varchar(255) default NULL,
    service_id int default NULL,
  
    default_value varchar(255) default NULL,
    modified boolean default NULL,
    type smallint default NULL,
    update_time int default NULL,
    value varchar(255) default NULL,
  
    PRIMARY KEY (customvariable_id),
    UNIQUE (host_id, name, service_id)
  );
  