{"id":"cdc-old-value-required-for-index-consistency","text":"`SecondaryIndex.process_event` depends on `CDCEvent.old_value` to remove stale index entries during updates; without before-images, incremental index maintenance produces phantom references","truth_value":"IN","source":"entries/2026/05/29/topic-ddia-unbundling-concept.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"cdc-old-value-required-for-index-consistency","truth_value":"IN","reason":"premise"}]}}