In my opinion, one of the goals of the AltDB movement is building software that fits in different parts of the CAP Theorem triangle. While relational databases

In my opinion, one of the goals of the AltDB movement is building software that fits in different parts of the CAP Theorem triangle. While relational databases are REALLY good (usually) at providing consistent data, things start to fall apart when you setup geographical replication. In the past, consistency seemed to be the most important thing for all applications. While it still is desirable and important, some users are beginning to prefer availability and partition tolerance over consistency.