data EmpsDK;
   input First $ Gender $ Country $;
   cards;
Lars	M	Denmark
Kari	F	Denmark
Jonas	M	Denmark
;
run;
proc print data=EmpsDK;
run;

data EmpsFR;
   input First $ Gender $ Country $;
   cards;
Pierre	M	France
Sophie	F	France
;
run;
proc print data=EmpsFR;
run;

data EmpsAll1;
   set EmpsDK EmpsFR;
run;
proc print data=EmpsAll1;
run;

data EmpsCN;
   input First $ Gender $ Country $;
   cards;
Chang	M	China
Li	M	China
Ming	F	China
;
run;
proc print data=EmpsCN;
run;

data EmpsJP;
   input First $ Gender $ Region $;
   cards;
Yoko	F	Japan
Nobuo		M	Japan
;
run;
proc print data=EmpsJP;
run;

data EmpsAll2;
   set EmpsCN EmpsJP;
run;
proc print data=EmpsAll2;
run;

data EmpsAll3;
   set EmpsCN EmpsJP(rename=(Region=Country));
run;
proc print data=EmpsAll3;
run;