DB Adapter - PostgreSQL - Primary key - auto increment handling

Hi,
I have to connect to a PostgreSQL DB. I have a table in which has a primary key called seq_id. This seq_id is being incremented using a sequence.
I have to configure the DB adapter for this table. The problem is that while creating the adapter it does not allow me to deselect the primary key (seq_id). Because of this I have to supply a value for the seq_id while inseting the data using the adapter. But this defeats the purpose of sequence (auto increment).
Is there a way to get around this and to avoid specifying the value for seq_id while using the DB Adapter and let it get inserted using the sequence of the DB?
Thanks,
Sanjay

Hello ,
you can see this thread :
http://stackoverflow.com/questions/17012339/windows-azure-sql-database-identity-auto-increment-column-skips-values
It's seems that SQL Server work with sequence and block 1000 values. In the cloud, your SQL Azure Database can be move from one server to an other or restarted and so a new sequence is used. That's why you jump from 4 to 1001.
Regards

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