Parent-Child relationships may be nested, with no limit. The UI is generated so that the display on a SHOW form of every child child data row has a Parent icon, for navigating to the row of the Parent table.
For every parent table, the UI for the SHOW form is generated to display all child forms as a tabbed menu in the bottom section of the page, with each subform row contents as a list presented on menu selection. Refer to the manpage Page Subforms Area.
|Parent Table ID||Read Only||The table which is a parent of the sub-form|
|Subform Table Name||The table name s subform is based on
|Subform Table Alias||Alphanumeric, space, underscore||The display name used on the user interface to reference this subform|
|New on Parent||Radio list||If the parent form displays a button to add a new entry to this subform|
|Created By||Read Only||User name of row creator|
|Last Updated By||Read Only||User name that last modified the row|
|Creation Date||Read Only||Timestamp of table row creation|
|Modified Date||Read Only||Timestamp of last table row data edit|
it is only possible to pick the subform or child name from a list, therefore it has to have been created already.