Hello, Can we process the following request with a generic page provider SELECT * FROM Document WHERE dc:language = '' OR dc:language IS NULL For information I managed to look for the nulls but I don't know how to add a predicate on the empty space ...

I am creating a relation between two documents with Services>Create Relation. How do I specify the predicate so both incoming and outgoing relations are created correctly. I have used the String IsBaseOn in the predicate and when the relation is ...