# Linked Table field

Linked table field allows the designer to form a one to one relationship between fields in two Datatable. The target field is identified using a search for a field value from another Datatable.

For example, Datatable A has the field Zone. Datatable B can reference the row in Datatable A using the Crosstable field and specifying the field Zone.

{% embed url="<https://youtu.be/odT5WEl69NY?si=JT8utH_m983SnOqn>" %}

### Settings

The target App and Datatable must first be identified. Then the target Datatable field must be chosen.

Additional search fields in the target Datatable can also be specified to help narrow the search. More information can be found in the tutorial [Datatable](/the-building-blocks/datatables-fields-and-data/datatable-to-datatable-relationships.md)[ to Datatable Relationships](/the-building-blocks/datatables-fields-and-data/datatable-to-datatable-relationships.md).

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