{"id":"cdc-event-semantics-depend-on-reconstruction-heuristics","text":"CDC event semantics are determined by reconstruction heuristics rather than explicit markers: insert vs update is distinguished by checking whether old_value is None, tombstones are reported as None values indistinguishable from missing data in conflict records, and snapshots use a sentinel sequence number (-1) to distinguish bootstrapped state from real events.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"cdc-event-semantics-depend-on-reconstruction-heuristics","truth_value":"IN","reason":"premise"}]}}