Old pole encountered new problems

In this society, the waves in the Yangtze River are pushed forward ). I learned some new concepts, just like what I came up with on Mars:

NoSQL ---> reverse SQL, is a non-relational database, http://baike.baidu.com/view/2677528.htm,

Why don't I directly tell non-relational databases. Our company has a system that uses N databases for horizontal splitting, but never thought it would rise to the theoretical level.
SNS --> Social Network Services, http://baike.baidu.com/view/8258.htm,

Facebook, QQ friends used this long time, the first time I heard of this term

JSON --> Javascript Object Notation, I used to listen to this concept for the first time and was also frightened by him.