History and Provenance

A track must provide provenance in the form of a history: which algorithm 'found' the track, and which algorithm(s) updated/modified the track. As in the Gaudi Event Model items that are stored in the event store are not supposed to be modified, algorithms that update and/or modify tracks must do this by creating new tracks in different locations in the event store.

-- GerhardRaven - 03 Apr 2005