见http://www.infoq.com/news/2011/04/newsql

nosql听说过，newsql…… . 啊这技术名词更新太快了！

一图顶千言:

• the NoSQL databases, designed to meet the scalability requirements of distributed architectures, and/or schemaless data management requirements,
• the NewSQL databases designed to meet the requirements of distributed architectures or to improve performance such that horizontal scalability is no longer needed  仍属于关系型数据库，但是具有分布式的高性能特征，（用户）不必要考虑水平扩展的问题！
• the Data grid/cache products designed to store data in memory to increase application and database performance