Database Software

Hi,

I have the problem in doing the incremental load of the dimension table.Before loading into the dimension table,i would like to check the data in the dimnesion table.
In my dimension table i have one not null surrogate key and the other null dimension tables.The not null surrogate key, i am populating with the Sequence Generator.
To do the incremental load i have done the following.
I made lookup into the dimension table and looked for a key.The key from the lookup table i have passed to the expression operator.In the expression operator i have created one field and hard coded one flag based on the key from the lookup table.I passed this flag to the filter operator and rest of the fields from the source.
By doing this i am not able to pass the new records to the dimension table.
Can you please help me.

I have another question also.
How do i update one not null key in the fact table.

Thanks
Vinay