PK on different columns on partitioned table

I have a table which I want to partition by date.

However it's Primary Key is a combo of another two columns.

I don't recall all the features of partitions, but what index should I build, to have any partition manipulations (dropping mostly) transparent to the user.

Thanx.
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We use Oracle 8.1.7.3 on Solaris 2.7 boxes remove NSPAM to email Received on Thu May 23 2002 - 11:08:52 CDT