$result  = db::addrecord(tablename, $record_as_hashref);
$id      = db::added_record_id;
@change  = @{db::updaterecord(tablename, $record_as_hashref)};
%record  = %{db::getrecord(tablename, id)};
@record  = db::getrecord(tablename); # Not for huge tables.
@record  = db::findrecord(tablename, fieldname, exact_value);
@record  = @{db::searchrecord(tablename, fieldname, value_substring)};