[TonyBagODonuts]

A time series based database that has an interface fully excel facing, including all excel functionality. I want to see the result value of a cell based output at a certain date, when it changed, and why. I need the interface in excel because all of the engineers already know it and all of their calcs are already in it. Not something excel like or similar, excel.

[abrichr]

Interesting, thanks for sharing! Can you please clarify:

- what exactly is the use case?

- why isn't e.g. SharePoint or Dropbox version history sufficient?

[TonyBagODonuts]

Sure, anything cloud based is right out, I haven't worked at at single place in 20+ years that allows anything in the cloud. I'm talking about Petro/chem engineering. SharePoint can be on premises, but that is revision/snapshot based, so the whole document is snapshotted, not individual cells. Within a revision a datum / cell might change multiple times, those changes are lost. Each cell change does cascade other changes in many other documents and drawings so being aware of each change is paramount. Missing a change not only would mean incorrect downstream /cross stream documents but it can result in the loss of life. It's a seriously tough problem with serious results.