Re: unique columns must be nullable ?

[Mike Matrigali]

Out of curiousity what behavior does Hibernate expect when 2 nulls are 
inserted into a "unique" nullable column?

Xanana Gusmao wrote:
On this page http://wiki.apache.org/db-derby/HibernateHelp
it says:
"Hibernate Annotations do not work because Derby does not allow a unique column
to be nullable"

Is this (that Derby's unique column must be non-nullable) still true ?