This document discusses new analysis skills required for working with big data technologies like NoSQL databases. It provides examples of popular open source NoSQL databases like Cassandra, HBase, MongoDB and Couchbase. It also classifies NoSQL databases into categories like column-oriented, document, key-value and graph databases. The document then discusses how big data solves problems related to volume, velocity, variety and value of data. It provides examples of sources of big data and trends shaping interest in big data. Finally, it discusses use cases of big data in retail and finance industries.