9. Transactional Approaches
Transactional big-data projects cant use Hadoop, since it is not real-time. For transactional systems that do not require a database with ACID (Atomicity, Consistency, Isolation, Durability) guarantees, NoSQL databases can be used though consistency guarantees can be weak. Scale-out SQL databases, a new breed of offering, also is worth watching in this area. New entrants are emerging all the time.