That's absolutely preposterous.
Good, attention-getting marketing, though. Can't blame MongoDB.
But if you have a boss actually influenced by an ad like this, make sure they and you have both read Dan McCreary and Ann Kelly's Making Sense of NoSQL.
Each major flavor of non-relational database has something it's good at (and plain-old relational databases in turn have things they're good at). This book will explain why.
They basically break databases down into 5 major types in use today:
Interestingly, from what I hear at Salesforce talks, they present a user interface to their customers that, for all practical purposes, gives those customers a traditional "relational database," but on the back end, Salesforce has been migrating from storing what actually goes into those "databases" away from a relational database of their own and into a ... I think it was a columnar database, but I wouldn't swear to it.
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