docs/docs/en/interface-builder/fields/specific/sub-table.md
The sub-table is suitable for handling to-many relationship fields. It supports batch creation and association of new data in the target collection, or selecting and associating existing data.
Different types of fields in the sub-table display different field components. Large fields (such as Rich Text, JSON, Long Text) are edited through a pop-up modal.
Relationship fields in the sub-table.
Orders (One-to-Many) > Order Products (One-to-One) > Opportunity
The default component for a relationship field is the Dropdown (supports Dropdown/Data Picker).
Supports selecting and associating existing data.
Field Component: Switch to other relationship field components, such as Dropdown, Data Picker, etc.
Whether to allow unlinking existing data for the relationship field in the edit form.