Custom types & enums

Define named enums once and reuse them as field types anywhere in the diagram — instead of repeating the same set of allowed values on field after field.

Defining an enum

Open the Types panel and:

1. Click + New type and edit its name.
2. Click + value to add values.
3. Edit or remove value chips inline (you can't remove the last value).
4. Remove a whole type with the trash icon.

Using an enum

Select the enum as a field's type in any type picker — it appears alongside the dialect's built-in types.

:::warning Deleting a type in use If you delete a type that a field still references, validation flags an enum-type-missing error on that field. Repoint or remove the field first. :::

Sample enums

The Acme Storefront sample defines three:

Type	Values
product_status	draft, active, archived
order_status	pending, paid, shipped, cancelled
payment_method	card, paypal, bank_transfer

These map to a native ENUM or a CHECK constraint in the generated SQL, depending on the dialect — see Export → SQL.