# Data-free generators

Some generators can be data-free. When a generator is data-free, it means that the output data is completely unrelated to the source data. There is no way to use the output data to uncover the source data.\
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Data-free generators implicitly have differential privacy.\
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A generator is not data-free if consistency is enabled.

## Generators that are always data-free <a href="#generators-data-free-always" id="generators-data-free-always"></a>

The following generators are always data-free:

* [Constant](https://docs.tonic.ai/app/generation/generators/generator-reference/constant)
* [Null](https://docs.tonic.ai/app/generation/generators/generator-reference/null)
* [Random Boolean](https://docs.tonic.ai/app/generation/generators/generator-reference/random-boolean)
* [Random Hash](https://docs.tonic.ai/app/generation/generators/generator-reference/random-hash)
* [Random Integer](https://docs.tonic.ai/app/generation/generators/generator-reference/random-integer)
* [Random Timestamp](https://docs.tonic.ai/app/generation/generators/generator-reference/random-timestamp)
* [Random UUID](https://docs.tonic.ai/app/generation/generators/generator-reference/random-uuid)

## Generators that are data-free when consistency is disabled <a href="#generators-data-free-when-not-consistent" id="generators-data-free-when-not-consistent"></a>

The following generators are data-free only when consistency is disabled:

* [Address](https://docs.tonic.ai/app/generation/generators/generator-reference/address)
* [Business Name](https://docs.tonic.ai/app/generation/generators/generator-reference/business-name)
* [Company Name](https://docs.tonic.ai/app/generation/generators/generator-reference/company-name) (deprecated)
* [Custom Categorical](https://docs.tonic.ai/app/generation/generators/generator-reference/custom-categorical)
* [Hostname](https://docs.tonic.ai/app/generation/generators/generator-reference/hostname)
* [Integer Key](https://docs.tonic.ai/app/generation/generators/generator-reference/integer-key)
* [IP Address](https://docs.tonic.ai/app/generation/generators/generator-reference/ip-address)
* [MAC Address](https://docs.tonic.ai/app/generation/generators/generator-reference/mac-address)
* [Name](https://docs.tonic.ai/app/generation/generators/generator-reference/name)
* [Shipping Container](https://docs.tonic.ai/app/generation/generators/generator-reference/shipping-container)
* [SIN](https://docs.tonic.ai/app/generation/generators/generator-reference/sin)
* [SSN](https://docs.tonic.ai/app/generation/generators/generator-reference/ssn)


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