I am working with DB2 on OS390 and am trying to derive some dates to be used within Business Objects. I need to create/calculate the following parameters:

last week (Monday - Sunday)
last month (1st calendar day of previous month - last calendar day of previous month)
last quarter
last year

Unfortunately, I have no experience with this DB and am having trouble finding good references.

Any help or direction is greatly appreciated!
Shelley