Table structure

[erolk]

hello,

I installed zimbra and took a look at the DB structure. I am analyzing the tables but i can not find any details about columns in tables. Are there docs about that issue?
For instance;

mysql> select * from mailbox where id=8\G;
*************************** 1. row ***************************
id: 8
group_id: 8
account_id: dc27b03d-991c-477c-a4b9-eebaf817a31d
index_volume_id: 2
item_id_checkpoint: 283
contact_count: 1
size_checkpoint: 393350
change_checkpoint: 682
tracking_sync: 0
tracking_imap: 0
last_backup_at: NULL
comment: user@domain.com
last_soap_access: 1285138546
new_messages: 0
idx_deferred_count: 5
highest_indexed: 291-271
1 row in set (0.00 sec)

What are the meanings of these columns?

Thanks