Very interesting article.
1 small mistake: Re Lai in his article refers to KVLite as KVLight. I think it should be corrected.
and 1 small question: Re Lai states that Oracle NoSQL is built by the acclaimed Berkley DB team. And it's not only Re Lai. I've seen this again in other articles and books too. Because I am a newcomer in this field, is the Berkeley DB the same as Berkley DB? Is it valid to write Berkeley as Berkley?
I think what you've pointed out are just common typo's.
Not that Wikipedia is always 100% accurate either, but here you can find the proper nomenclature.