Quite a while ago, I heard about Object databases. Cool concept and all. Now, with the event of ORMs everywhere, does anyone still use any of the Object oriented Databases s
In fact, database systems are one of the areas that fundamental changes are really hard. Billions of dollars are spent on relational database systems and they are working pretty well. They are proven technology and they have been flexible enough to satisfy most needs (using ORM for example, as you said). Object databases do exist actually, even outside academia. But don't expect to see anything as big as SQL Server or Oracle in that area anytime soon. They do exist as a theory and as small, application-specific databases and various products. Basically, I predict relational databases become more object oriented in the future to handle requirements better.