Can you explain in more detail - what do you mean?
MySQL/MariaDB allows you to execute a query like:
SELECT T1.fld1, T2.fld2
FROM DB1.tbl1 as T1, DB2.tbl2 as T2
WHERE T1.fld1 = T2.fld2
A similar query in VDB results in an error
SELECT RecID FROM DB1.tbl1;
Kernel Error: 0xa000. "Full name "DB1.tbl1" is not supported in this context." is not supported.
Is it possible in VDB to perform cross-database queries on databases registered on the same server?