Start Routine : Source Package

Hi Gurus

I know this is a basic question but still have doubt. Hope moderators will not lock my thread.

>> We say Start Routine runs per Source Package but field routine per record.

What does this mean?

If I have a start routine to delete some records based on certain condition, we write DELETE SOURCE_PACKAGE

But basically we delete one record here not the total package of 50,000. Then why do we write Delete Source package?

Thanks

Shouvik