[Xapian-discuss] creating a database that's compatible with omega

[Olly Betts]

One thing I failed to mention - there's no point creating "U" prefixed
terms in your own indexer "for compatibility".  They're only used by
omindex for updating documents in an existing database, so if you aren't
using omindex on a database, it doesn't need U terms.

Of course, your indexer may use these terms in a similar way itself, in
which case it's certainly OK to add them (though a "Q" prefix is really
a better choice for a general "uniqueid").

Cheers,
    Olly