# ID

ID columns act as reference labels. The values generally do not have any semantic or mathematical meaning on their own.  Primary and foreign keys are examples of `'id'` columns.

![For example, the primary key column user\_id is an id column that can be used to identify each row. It has a specific format: 'ID\_' followed by a 3-digit code.](/files/sjv4L59knLENhO10Nn3w)

{% hint style="warning" %}
ID columns are not automatically detected. Please verify your data and manually set any ID columns.
{% endhint %}

## Browse Id Transformers

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><a href="/pages/rhnOuctmd01weH8d2Q6B"><strong>AnonymizedFaker</strong></a></td><td>Generate text belonging to specific contexts or rulesets.</td><td><a href="/pages/rhnOuctmd01weH8d2Q6B">/pages/rhnOuctmd01weH8d2Q6B</a></td></tr><tr><td><a href="/pages/2hF2F1qUfEfVgPY6s6Vu"><strong>IndexGenerator</strong></a></td><td>Generate a countable ID index with prefixes and suffixes.</td><td><a href="/pages/2hF2F1qUfEfVgPY6s6Vu">/pages/2hF2F1qUfEfVgPY6s6Vu</a></td></tr><tr><td><a href="/pages/Q0Z88dQiWWw2qSNPgLoy"><strong>RegexGenerator</strong></a></td><td>Generate structured text using a regular expression format.</td><td><a href="/pages/Q0Z88dQiWWw2qSNPgLoy">/pages/Q0Z88dQiWWw2qSNPgLoy</a></td></tr><tr><td><a href="/pages/Nh8MuPHbqqYywJTsrqIN"><strong>Treat IDs as categorical</strong></a></td><td>Use any of the categorical transformers to treat IDs as recyclable, categorical labels.</td><td><a href="/pages/Nh8MuPHbqqYywJTsrqIN">/pages/Nh8MuPHbqqYywJTsrqIN</a></td></tr></tbody></table>


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