If you don’t know the difference between Terrabytes and Brontobytes or Hadoop and MapReduce, this extensive glossary of Big Data terminology is essential.
“Big data comes with a lot of new terminology that is sometimes hard to understand. Therefore we have created an ABC of big data that should give some insights. Some of the definitions refer to a corresponding blog post. Of course this big data glossary is not 100% complete, so please let us know if there are missing terminology that you would like to see included.”
This great resource is available at: http://www.bigdata-startups.com/abc-big-data-glossary-terminology/