Thanks Julian/pando,

I got ur point.

Now I have a slightly different question ,

I have a table not having records more then 10000.
But users process are such that they delete ALL the records daily and then next days new records are inserted for processing.

I am not facing fragmantation problem but sometimes performance problem there.

As all the data is daily deleted from the table . It it makes any sense to Rebuild indexs of such a table.