# Conditional Expression

Tynamo uses Dynamo's Expression. See the AWS documentation below.

* AWS Docs :[ Conditional Expression](https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.ConditionExpressions.html)
* AWS Docs : [Conditional Operator and Functions](https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.OperatorsAndFunctions.html)