Synthetic demonstration. SchemaHand turns supported table definitions into a client handoff; it does not connect to a database. Draw the diagram from this synthetic SQL. Relationships come from declared foreign keys. Add a plain-English handoff note. These are schema notes, not customer or order records. Paid exports are a readable HTML handoff and CSV schema dictionary. Saved HTML notes can be edited; those edits do not update the separate CSV. A fixed sample is free to inspect. The offline edition processes your supported SQL locally; complete SQL dialect coverage is not claimed.