SQLite runs great on mobile, but it is a data island. The document model provides a foundation for synchronization and conflict detection that the relational mo

SQLite runs great on mobile, but it is a data island. The document model provides a foundation for synchronization and conflict detection that the relational model cannot. Specially it becomes very challenging in the relational model to sync a subset of data to each device, while allowing updates to data on any node, regardless of that node's network connection status. That is, with MVCC documents, you can push the partition tolerance of a system much further than with the relational, or even key/value models.