Do we need an excel spreadsheet to have an index?

[npeltier]

We ran yesterday into an issue where data from an index was jeopardized by user amending the file. I heard we don't necessarily need an excel spreadsheet anymore to use an index, is that true? how?
cc @auniverseaway

[mokimo]

Sounds like a question for the product team directly (aka. I don't know the answer 😁)