{"id":"dynamodb-transactions-bounded-atomicity-envelope","text":"DynamoDB transactions provide cross-table ACID guarantees within a fixed envelope: maximum 100 actions per transaction, 4 MB aggregate size, no duplicate item targeting, and exactly four action types — schema design must ensure all atomic business operations fit within these constraints or forfeit transactional guarantees.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"dynamodb-transactions-bounded-atomicity-envelope","truth_value":"IN","reason":"premise"}]}}