Install CouchDB & use with JSON and Map-Reduce

CouchDB is another offspring from the open-source, NoSQL, non-relational databases and is maintained under the Apache Foundation. It differs itself form the likes of MongoDB or Cassandra in many ways, except they all store data in so called “documents” that are in JSON format. Utilizing this format allows for data structures which can be hashes, lists, nested arrays and of course scalar values.

This added complexity results in more powerful features, mainly to have a db that is not just a ...