Connect DbGate to a disposable copy of the databases you actually use. Browse schemas, run a read query, edit a row, export a table, and check transaction behavior. Use a limited account to verify the interface does not imply permissions the database has not granted.
A database GUI can make accidental writes easier. Prefer read-only credentials for exploration, keep backups, and inspect generated SQL before applying changes. The best tool makes data work clear without weakening access boundaries.