# PynamoDB Field Aliases
up:: [[PynamoDB MOC]]
To give an alias to DynamoDB field with PynamoDB, use the `attr_name` parameter for the appropriate attribute constructor:
```python
class Thread(Model):
class Meta:
table_name = 'Thread'
forum_name = UnicodeAttribute(hash_key=True)
# This attribute will be called 'tn' in DynamoDB
thread_name = UnicodeAttribute(null=True, attr_name='tn')
```