Clustering demo.very good

				First 
				    ------->   create user mca identified by mca;
				    ------->   grant dba to mca;
				Second
				   -------->    create dsn name as mca;
				Third
				  ---------->
					copy the content of "sem1.txt" and paste in sql
					copy the content of "sem2.txt" and paste in sql
					copy the content of "sem3.txt" and paste in sql
					copy the content of "sem4.txt" and paste in sql
					copy the content of "sem5.txt" and paste in sql