Individual skill
spreadsheet-or-database
Decide honestly when a spreadsheet should become a database or app — the five outgrowth signals (concurrent editing, relational strain, permission needs, scale, process-in-comments), what staying costs vs what migrating costs, and the incremental escape paths. Use when asked should this be a database, our spreadsheet is breaking, is it time to move off sheets, or what should replace this monster workbook. Produces the signal assessment on the actual workbook, the stay-vs-move verdict with costs both ways, and the migration path sized to the team.
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- Last checked
- Nov 9, 2026
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# Spreadsheet Or Database Skill
Every important spreadsheet is either the right tool or a database wearing a costume — and both errors are expensive: migrating a perfectly good sheet to an app nobody needed (months of building, adoption never comes), or riding a sheet years past its limits (the tab named `Sheet1 (Recovered)`, the row someone sorted into the wrong customer, the formula civilization one intern away from collapse). The decision has real signals, and honest cost accounting on *both* sides — because "we should build an app" and "the sheet is fine" are both usually said by whoever pays neither cost.
## What This Skill Produces
- **The signal assessment** — the five outgrowth signals scored against the actual workbook
- **The verdict** — stay / stay-with-hardening / move — with the costs of each stated, not implied
- **The hardening list** (when staying) — the protections that buy years: input isolation, validation, protection, the audit pass
- **The migration path** (when moving) — sized honestly: low-code table tools before custom apps, one workflow at a time before big-bang
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