At the moment, the demand for highly scalable post relational (can we say) databases is fairly limited although with many governments now keen to try and store

At the moment, the demand for highly scalable post relational (can we say) databases is fairly limited although with many governments now keen to try and store every email, phone conversation and Internet browsing session of their populace perhaps the demand is going to increase in the near term. It is my view that the RDBMS has a lot of life in it yet - indeed it's effective penetration is still woefully low. Far too many businesses have no coherent database in place and rely upon piecemeal record keeping and ad hoc processes just to manage day to day transactions. Perhaps we need even better relational solutions before we need post-relational ones.