I guess there are many views on what big data is..... please have a look at this blogpost to get another angle on the topic: http://johanlouwers.blogspot.nl/2013/07/adding-v-to-four-v-big-data-thinking.html
Regards,
Johan Louwers.
Big data is all your data - your data warehouse data and data that has traditionally not been in your data warehouse: unstructured data, social media feeds, sensor data etc. The volume of these newer data sources is growing exponentially and there are valuable insights to be had in that data when combined with structured, operational data in the data warehouse.
See Big Data and Oracle - Transform Your Business with Big Data | Oracle
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"Big Data" are the words to describe the moment on we understand that Relational Model isn't the answer for everything...
