I have not used CC but yes you can.
Below is not composite column. It is not not column with JSON hash value. Column value can be anything you like.
date inside value are not indexed.

On Tue, May 15, 2012 at 9:27 AM, Abhijit Chanda <abhijit.chanda0@gmail.com> wrote:
Is it possible to create this data model with the help of composite column.
User_Keys_By_Last_Name = {
  "Engineering" : {"anderson", 1 : "ac1263", "anderson", 2 : "724f02", ... }, 
  "Sales" : { "adams", 1 : "b32704", "alden", 1 : "1553bd", ... }, 
}
I am using Astyanax. Please suggest...
--
Abhijit Chanda
Software Developer
VeHere Interactive Pvt. Ltd.
+91-9748888395