# Link fields

Links are a powerful way to model relationships between content. Models can have link fields which point to other records, for example:

-   An article linking to its category (singular relationship).
-   An article linking to related articles (plural relationship).
    

In DatoCMS, you don't need to define a field for the reverse relationship (i.e., the category linking to its articles): during the integration with your website, you can easily perform reverse reference lookups with just a couple of lines of code.

When you add a new field of type **Link** (or **Links**) to a model, DatoCMS requires you to specify within the *Validations* tab the models that can be referenced by the field itself.

To let editors select one (or more) records to link, DatoCMS will present a dropdown with auto-completion turned on:

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### Expanded view

If you prefer, you can switch any link field to **Expanded view** mode, to provide your editors with a nicer, more meaningful preview of the linked records:

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As with any other field, this setting can be found under the *Presentation* tab of your field:

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Intro to the Link Field

Play video »

](https://www.datocms.com/user-guides/content-modeling/intro-to-the-link-field.md)

## Related content in "Content modelling"

- [Introduction to Content Modeling](https://www.datocms.com/docs/content-modelling.md)
- [Single instance models](https://www.datocms.com/docs/content-modelling/single-instance.md)
- [Record ordering](https://www.datocms.com/docs/content-modelling/record-ordering.md)
- [Hierarchical sorting (Tree-like collections)](https://www.datocms.com/docs/content-modelling/hierarchical-sorting.md)
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- [Structured text fields](https://www.datocms.com/docs/content-modelling/structured-text.md)
- [Link fields](https://www.datocms.com/docs/content-modelling/links.md)
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- [Validations](https://www.datocms.com/docs/content-modelling/validations.md)
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