What is the expected behaviour for DataSetObserver

Question

Hi,

If I register a DataSetObserver to my CurserAdapter, how many notification I exepcted to get in my DataSetObserver?

        CursorAdapter mAdapter;
        mDataSetObserver = new MyDataSetObserver();
        mAdapter.registerDataSetObserver(mDataSetObserver);

1 per row in my database table? or just 1?

Does it make a difference if I have another code which edits * a row of existing data * add a new row of data to the table?

Thank you.