The details are pretty confusing1
[…] the new standard — which encompasses the MongoDB API, data representation
(BSON), query language and wire protocol — appears to be all about
establishing a way for mobile and other next-generation applications to
connect with enterprise database systems such as IBM’s popular DB2 database
and its WebSphere eXtreme Scale data grid.
But the juicy part is in the comments; if you can ignore the pitches.
Original title and link: IBM and 10gen are collaborating on a standard that would make it easier to write applications that can access data from both MongoDB and relational systems such as IBM DB2 ( ©myNoSQL)