In the Enterprise Data Manager file, relationships define the hierarchy of the object types listed for the EDM. By specifying relationships, you define parent and child nodes. The parent and child nodes you specify in the relationships element must also be defined in the node elements of the file. You can specify one parent object; the remaining objects must be child objects to the parent you define. This section is dependent on the relationships section in the Object Definition file, and should only be changed if corresponding changes are made to the Object Definition file.