This video discusses some of the data modeling issues encountered while transitioning from a relational database to NoSQL. Large data sets are driving adoption of NoSQL technologies and transitioning from relational persistence to NoSQL persistence is non-trivial.
The challenges of the transition to NoSQL are the following:
* Moving from relational schema to schema-less non-trivial
* Little to no tool support
* Largely undocumented frameworks and APIs
* Distributed system expertise is required
Watch this video on http://www.infoq.com/presentations/MySQL-NoSQL-Data-Modeling