Versioned on class
This page was created by Hans.karlsen@mdriven.net on 2022-02-19. Last edited by Stephanie@mdriven.net on 2025-02-10.

When you set Versioned on a class we never use sql-command-update or delete for that class. Instead we use insert with TimeStampStart and TimeStampStop added as non-attribute-db-columns.

You can now track all the changes done on an object - and retrieve old versions of that object with operators like allInstancesAtTime, atTime