{"id":"dynamodb-updateexpression-four-actions","text":"DynamoDB `UpdateExpression` supports four action types: `SET` (add/replace attributes), `REMOVE` (delete attributes), `ADD` (increment numbers or add to sets), and `DELETE` (remove elements from sets).","truth_value":"IN","source":"entries/2026/03/11/amazondynamodb-latest-APIReference-API_UpdateItemhtml.md","source_url":"","source_hash":"3e4e050a17f9475f","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"dynamodb-updateexpression-four-actions","truth_value":"IN","reason":"premise"}]}}