## Relations to be discussed and semantically correct named
Described potential relations go in both directions and need to be named.
Described potential relations go in both directions and need to be named. Some relations
are predefined by the "within" DDI structure, like question and answer or variable and question. Other relations connect DDI documents, like variable in waves. Other relations go
to outside elements, like variable is tagged by a controlled vocabularies.
### Variables
- source variable is the same variable as in the target study (wave)
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@@ -24,6 +26,7 @@ Described potential relations go in both directions and need to be named.
