What does 'active user' mean here?
If five people give five answers, you have a definition problem, not a data problem. A data dictionary settles it once, for everyone.
What goes in it
- Each key metric, its plain-English meaning, and its formula.
- The owner to ask when something's unclear.
- Source tables and any known caveats.
Keep it alive
A dictionary no one updates dies fast. We embed it where people already work and tie it to the models that produce the numbers.