Super column

[Image:SuperColumn (data store).png|300px|thumb|The super column consists of a (unique) super column name, and a number of columns.]
A super column is a tuple with a binary super column name and a value that maps it to many columns. They consist of a key–value pairs, where the values are columns. Theoretically speaking, super columns are associative array of columns. Similar to a regular column family where a row is a sorted map of column names and column values, a row in a super column family is a sorted map of super column names that maps to column names and column values.
A super column is part of a keyspace together with other super columns and column families, and columns.

Code example

Written in the JSON-like syntax, a super column definition can be like this:

Where:
"databases" are keyspace;
"Cassandra" and "HBase" are rowKeys;
"name" and "address" are super column names;
"firstName", "city", "age", etc. are column names.