{"id":"dynamodb-streams-shard-open-vs-closed","text":"A DynamoDB Streams shard with only a `StartingSequenceNumber` is open (still receiving records); a shard with both `StartingSequenceNumber` and `EndingSequenceNumber` is closed.","truth_value":"IN","source":"entries/2026/03/11/amazondynamodb-latest-APIReference-API_streams_DescribeStreamhtml.md","source_url":"","source_hash":"7534019f095c19fd","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"dynamodb-streams-shard-open-vs-closed","truth_value":"IN","reason":"premise"}]}}