Hi Bharath,
Do like this,
Assuming that you want to delete the records in database table.
1.Fetch the records of the DB table into internal table
2.Loop the records of the internal table
3.Inside Loop check the field with your date range.
If found with in the range.
CONTINUE.
Else "Not found in Your Date Range
Use DELETE to remove the record from Table
endif.
Regards,
Pavan