title: Why many refer to Cassandra as a Column oriented database?
body: <p>Reading several papers and documents on internet, I found many contradictory information about the Cassandra data model. There are many which identify it as a column oriented database, other as a row-oriented and then who define it as a hybrid way of both.</p>
  
  <p>According to what I know about how Cassandra stores file, it uses the *-Index.db  file to access at the right position of the *-Data.db file where it is stored the bloom filter, column index and then the columns of the required row.</p>
  
  <p>In my opinion, this is strictly row-oriented. Is there something I'm missing?</p>