Schema Design Basics  Spencer Brody, Software Engineer, MongoDB
October 3 2011   One of the challenges that comes with moving to
MongoDB is figuring how to best model your data. While most
developers have internalized the rules... of thumb for designing
schemas for RDBMSs, these rules don't always apply to MongoDB.
The simple fact that documents can represent rich, schema-free
data structures means that we have a lot of viable alternatives
to the standard, normalized, relational model. Not only that,
MongoDB has several unique features, such as atomic updates and
indexed array keys, that greatly influence the kinds of schemas
that make sense.