For more than 20 years, SQL has been the unquestioned ruler of the database world. But now it's facing its greatest challenge. Many of the largest and fastest-growing databases in the world belong to ...

A relatively new concept in the world of database systems is the NoSQL DBMS. What is NoSQL? Well, I bet you guessed that it doesn’t use SQL, right? I mean, it is sort of right there in the name. But ...