NoSQL First Impressions: Object Databases Missed the Boat
NoSQL, ObjectDatabases ... all of these are just the ugly Cobol-era hierarchical databases trying to make a comeback. These things were so nasty that SQL seemed like a breath of fresh air, so just wait.
Really sloppy article, about the only thing useful, and it is pretty obvious, is that your database schema shouldn't be strongly tied to an implementation language.