Need Help on table column definition

Hi All,

Please help me to understand the definition of following column available in cdr table of asteriskcdrdb.

1.userfield
2.uniqueid
3.accountcode
4.amaflags
5.disposition
6.lastdata
7.lastapp
8.dcontext

Apart from this please help to understand the definition of these columns of queue_log table.

1.partition
2.time_id
3.call_id
4.queue
5.verb
6.data1,data2,data3,data4

Thanks & Regards

Sanjay

Please provide details on same as soon as possible .

Thanks Sanjay