coding for DB connect

Hi All,

I am new to SAP BW and trying to gather as much as I can when reading topics and looking to you all to gather the knowledge.

Can anyone tell me what is the ABAP code that needs to be put in place for DB connect. I am aware of the procedure , but have no idea of the preparation that needs to be done in BW and also the ABAP code that needs to be done.

Thanks in advance

Amit