Concepts

Three ideas explain most of pgdba’s behavior:

• The safety contract — why every session is read-only by default
• Calibration and thresholds — why the defaults are trusted, and when to override
• Trends and deltas — what --state-dir adds across runs

• The safety contract — What every pgdba session promises before a single query runs.
• Calibration and thresholds — Why pgdba's defaults are trusted — and when to override them.
• Trends and deltas — How --state-dir turns repeated runs into a resolved/new/unchanged history.