NOT ONLY SQL

Adds scalability, distribution to the databases.
Makes DB Document-oriented. Allowing storage of data as “documents” with different structure in the same DB. E.g. following docs may be stored in the same DB: Details: http://en.wikipedia.org/wiki/Document-oriented_database

  {
    FirstName: "Jonathan",
    Address: "15 Wanamassa Point Road",
    Children: [
         {Name: "Michael", Age: 10},
         {Name: "Jennifer", Age: 8},
         {Name: "Samantha", Age: 5},
         {Name: "Elena", Age: 2}
    ]
   }
   
  {
     FirstName: "Bob",
     Address: "5 Oak St.",
     Hobby: "sailing"
  }

Details: http://www.firatatagun.com/nosql/NoSQL-Theory,%20implementations,%20an%20introduction.pptx