query regarding database size

hi,

( sap 4.7c + sql server 2000 (Module:sd/mm/fi )

( data : 1 & half year - no BI )

our database size is around 50 GB

and log size is around 30 GB

I doubt that something is wrong.

can anyone explain to me what is right and

what action one should take on this type of scenario.

thanks in advance

raj