Was it just two or three years ago when choosing a database was easy? Those with a Cadillac budget bought Oracle, those in a Microsoft shop installed SQL Server, those with no budget chose MySQL.

As companies use the Web to build new applications, and as the amount of data generated by them increases, they are reaching the limits of traditional relational databases. A set of alternatives, ...

What is surprising is how different the NoSQL projects are turning out to be. Whereas the old relational space largely converged on a set of features and a standard language, these new databases are ...