The update of the node to be updated may not cause the update of other trees, and the update efficiency is high.

The updating is carried out in accordance with an update sequence.

The first update information relates to the update of the first program, and each second update information relates to the update of each second program.

While monitoring update by an updating section, when a database is updated, the update content of the database is stored as an update log.

The update may include configuration update data and configuration update metadata.

The updating phase may also include updating an occurrence number.

The upgrade may relate to a hardware component at the computing device needing an upgrade element for the upgrade.

Preferably any update that is implemented into the primary database is validated to confirm that the implemented update matches the approved update.

In addition updating is carried out in accordance with an update sequence.

The relation is iteratively updated by updating quantisation levels.

The update section (107), if it is accepted that the map data is updated, executes the update processing of the map data.

In response to determining that the update has been downloaded, the first and second target device run with the update.

the quality of the data update.

the date on which the data has been updated

the description of the update