Historian Overview
How QUBIQ stores tag history — ingestion, quality and event time, rollup tiers, epochs, ownership and the guarantees behind them.
Historian Configuration
Designate the historian store, set each tag's storage rules, set retention, repair a store, and read the historian's alarms.
Quality and Time in History
What every stored row records — quality and its reason, whose clock the time came from — plus heartbeat rows, outage markers and the clock-skew alarm.
Querying History
Read stored history from charts, scripts and exports — retrieval modes, bucketing, statistics, the value at an instant, and what keeps reads fast.
Annotations
Notes on tag history — a moment or a period, placed on the Historian chart, shown on every chart of those tags, with who may write them and where they are kept.