By the time you're reading this, the whole world will know that the MongoDB 3.2 BI Connector is the PostgreSQL database, with some glue to flatten data, throw away bits and pieces, and suck out whatever's left into PostgreSQL.
After all, MongoDB's own answer to the problem of analytics on MongoDB is to pump the data out of MongoDB, flatten it out, and dump it into PostgreSQL. If your data is going to end up as flat relational data in PostgreSQL, why not start out there, too? Kill two birds with one stone!

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