check for existing file in directory devest/dev_XXXXX
if yes then
 start from that point
if not then	
Get app id from dev_apps table and dump into file apps.txt
 for appid (read each record individually and do following)
  var1=select entire record of appid into variable
  get est_dev_id for that app_id from dev_est table and dump into file dev_est.txt
     for est_dev_id (read each record individually and do following)
      var2=select entire record of dev_est into variable
      get est_dev_req_id for that est_dev_id from dev_est_reqs table and dump file dev_est_req.txt
	for est_dev_req_id (do following)
	 var3=select entire record of dev_est_req
	 get est_dev_req_status_id for that est_dev_reqs_id from dev_est_reqs_status table and dump file dev_est_req_status.txt
	   for est_dev_req_status_id (do following
	    var4=select entire record of dev_est_req_status 
	    echo $Var1 + $var2 + $var3 + $var4 
	    apply conditions / validations
		i.e var1.col1 or var1.col4 is null, var2.col2, var2.col5, etc
		if, else, elseif, cases, etc
		 prompt user for action
		 load devest/dev_XXXX for initial
		 delete dev_est_req_id, update dev_est_req.txt for continuation
		 default input condition
		else condition here
		 insert into logs
		 check for insert success
		 insert into some table
		 check for insert success