count total empid

Question

plz write the code in businesslayer
read total employes

EMP Table AS Follows;

EMPID EMPNAME MGRNo MGRNAME
1 Raj Null RAvi
2 Ram 1 Sam
3 ttt 2 ghg
4 Hari 3 Yogi

from the above EMP Table i wan the output as follows


total no of employes 4