The Updating Dependency
When Data Dictionary objects are created, dependencies between DDOs often must be established. When a child-file DDO is created, it must establish a dependency to its parent-file(s) DDO(s). It can do this with the DDO_server property.
Object Parent_DD is a Parent_DataDictionary
End_Object
Object Child_DD is a Child_DataDictionary
Set DDO_server to Parent_DD
End_Object
When we refer to child and parent, we are talking about the relationship between the objects’ data files, not between the objects (the objects are siblings). Once an updating dependency is established, the DDOs "know" about each other and can communicate directly. Since child-file DDOs are expected to update parent-file DDOs, the parent-file DDOs must be created first. Always create your DDOs starting with those for the parent-most files.