DO we need to run Info Package every time before DTP Process to load the da

Hi friends,

IN BW 7.0 do we need to run every time the Info Package before DTP process to load the data into target or only one time we need to run the Info package then from that point onwards we need to run DTP process, Please let me know. basically I am planning to create the process chains so I should put Info package before DTP to load the deltas or full load??

Thanks a lot,

Harshan