There is one question about relationships that I can't find an answer to, even after reading the whole Help topic.
E.g. the is a table ORDERS_ALL. This table is build by copying data from ORDERS_DOMESTIC and ORDERS_EXPORT. All three tables have as key ORDER_ID. Of course the same ORDER_ID does not exists in both .._DOMESTIC and .._EXPORT.
For various reasons (sources etc) the DOMESTIC and EXPORT tables can not be combined into one right from the start, with a field marking them for either D or E.
Q: can this work like this? If not, how should this otherwise be designed?
Note the above is not the real problem, but an for everyone easy to understand example.
Thanks for your ideas!