Why many refer to Cassandra as a Column oriented database?

Question

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 oriente

Answer 1

Cassandra has a concept of column families(table), which originally comes from BigTable. Though, it is really misleading to call them column-oriented as you mentioned. Within each column family, they store all columns from a row together, along with a row key, and they do not use column compression. Thus, the Bigtable model is still mostly row-oriented.