Regarding table control in BDC

Hi,

How can we handle table control in BDC,If i have the transaction like

1>having scroll bar

2>having InsertButton for the tablle control

3>Even though if we have scroll bar or Insert button(+) , is there any limit for the number of rows in table control

or can we insert as many records as we want?

If there is limit how can we identify ,what is the limit of table control.

4>How can we know for table control ,how many records are inserted for each scroll down or Insert button.

i think it varies accroding to the resolution.How can we handle this

Thanks