NoSQL is more than just a trendy Buzzword. It opens new ways towards more rapid development and high performance data storage.
CouchDB is one of the most prominent NoSQL databases. Its many uses stretch from mobile applications in need of light weight embedded databases all the way up to high performance data storage for huge web applications. Beyond its powerful storage capacities, CouchDB provides the means to store and execute CouchApps, which are essentially Web Apps, directly within the database elleiminating the need for an additional layer.
This presentation intoduces CouchDB, its differences to classical SQL databases and gives you an idea of advanced usage including CouchApps.