Domination of relational databases and SQL, caused that in developers think about operating and analyzing data as of design patterns. Unfortunately, for large sets of data relational database could be insufficient. Luckily we aren't doomed. Thanks to non-relational Big Data tools, such as combination of storage and computations, which is Apache Hadoop, we can analyze giant data sets in easy and effective fashion. It requires changing mindset from SQL to Map-Reduce and being familiar with few patterns, which helps solve typical problems, which we used to cope with SQL.