Martin Fowler: The Future is not just NoSQL, it's Polyglot Persistence

The NoSQL v. SQL argument has been beaten (almost) to death, and now it's time to look forward to the foggy future of the data storage and access.  Martin Fowler and Pramod Sadalage have s recently released a slick infodeck tracing a simple history of databases, as well as their own prophecy of where databases are headed, namely Polyglot Persistence, or: "Using multiple data storage technologies, chosen based upon the way data is being used by individual applications."  Below are a couple of screenshots from the infodeck, as well as a link to the .pdf. 

Link to The future is: NoSQL Databases Polyglot Persistence