delta data loading for bseg table

Hi experts please help,

                I want to do delta data loading for BSEG table, As i am new to DATA SERVICES please let me know step by step process for delta data loading for BSEG table.

1.the BSEG table is directly fetch from ECC.

2.I have 2 environments in data services that is ECC and Oracle, so that i can drag and drop BSEG table from ECC, and then do the process for delta data loading.