> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dovetail.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Categorize with data fields

Fields help you capture metadata to organize project data consistently - like spreadsheet headers. All fields have a title and a property.

Fields live on data objects and by default, unique to each project. You can use fields to help segment and categorize whole pieces of data at a high-level.

***

## Difference between a field and a tag

A tag and a field serve different purposes in your raw data. While tags analyze the content of your data, fields describe the data source itself and provide context around it.

<CardGroup cols={2}>
  <Card title="Field" icon="file-spreadsheet">
    * Used to structure and categorize your raw data at a high-level. As a field lives across all data in a project, some examples of information you would capture as a field include the research method used, interview date, usability testing score, segment, and net promoter score.
  </Card>

  <Card title="Tag" icon="tag">
    * Used to group highlights and track themes within a single piece of raw data or across a set of data. 
      They help you thematically group bite-size information captured within different pieces of data within a project. 
  </Card>
</CardGroup>

<img src="https://mintcdn.com/dovetail-e5aa4160/KQAL-sbmnn8I0g9n/images/academy/Tags-and-fields-differences.png?fit=max&auto=format&n=KQAL-sbmnn8I0g9n&q=85&s=0d4ad81b5d0ab80f2411c11ca4eed975" alt="Tags And Fields Differences Pn" width="4416" height="2940" data-path="images/academy/Tags-and-fields-differences.png" />

***

## Create data fields for a project

Data fields are useful for categorizing your raw data by research method, interview date, usability testing scores, segment, net promoter score, and more.

* To add a field to your data, open a note within your project and click `+ New field`.
* From there, you can set a title, select a note field type, and enter a value to the note's field.
* When you add a new field to a note, it will also be added to all other notes in that project. The property added for this field will be unique to the note.

***

## Example of data fields you can use

See table below for some common examples of data fields you could use include to categorize your raw data in projects.

| **Field title**  | **Field type**         | **Field value examples**       |
| :--------------- | :--------------------- | :----------------------------- |
| Data             | Single select          | Interview, Survey, Document    |
| Persona          | Single or multi-select |                                |
| Region or Market | Single select          | APAC, EMEA, AMER               |
| Interview stage  | Single select          | Scheduled, Conducted, Analyzed |
| Interview round  | Single select          | Round 1, Round 2, Round 3      |