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

# Data Links

Data Links represent relations between data records in your application and data records in external applications.

For example, if you want to link a User in your app with a corresponding User in a third-party app, Data Links are what you need.

## Data Link Tables

Data Links are organized in Data Link Tables. You can manage the list of tables on the [Data Links](/reference/workspace-elements/data-links) page.

You should create a Data Link Table for each type of relation you want to manage, like "Users to Users" or "Meetings to Deals".

## Using Data Links

You can use Data Links in:

* [Create Data Link](/reference/workspace-elements/flows/function-nodes) and [Find Data Link](/reference/workspace-elements/flows/function-nodes) flow nodes.
* Find Data Link [Formula](/docs/references/formulas)
* Via API.

## Deployments

See [Data Link Table Instances](/reference/workspace-elements/data-links/data-link-table-instances)