# Meeting Alex Julian 2024-06-12 ###### tags: `technical-discussions` [TOC] * Store date in the extras of the AiiDA process nodes (`WorkGraphNode`)s and Data nodes? On WG creation, we cannot attach it to the AiiDA Data nodes, as they don't exist yet, the WorkGraph contains only pointers / references. * `grid_file` currently always new `SinglefileData`. Ideally should just be one, if given absolute filepath. Depends on how W&C workflows are set up