# Model

- [Decorators](/dynamo-easy/api/model/decorators.md): Decorators are used to add some metadata to our model classes, relevant to our javascript-to-dynamo mapper.
- [Mapping Concept](/dynamo-easy/api/model/mapping-concept.md): Depending on the value type or the meta data provided from decorators, values are mapped to DynamoDB attributes.
- [CustomMapper](/dynamo-easy/api/model/custommapper.md): With custom mappers you're able to define how the JS values are mapped (toDb) and how the DynamoDB attributes are parsed (fromDb).
