How to define Driver Component and drive transcation using UVM

 UVM has a built in library "uvm_driver"  used to define the  Driver component

// driver points to the item as tx_item defined using sequence item

class  tx_driver  extends  uvm_driver #(tx_item);  

// UVM component macro registers this with the factory definition

        `uvm_component_utils(tx_driver)   

         function new (string name, uvm_component parent);

            super.new(new,parent);

          endfunction

          virtual task run_phase(uvm_phase  phase);

            tx_item    tx;   // pointing to sequence item definition

            forever begin

                seq_item_port.get_next_item(tx);

                drive_to_dut(tx);

                seq_item_port.item_done();

              end

           endtask

           virtual  task drive_to_dut (tx_item tr);

            `uvm_info("TRANSFER", $sformatf("tr.data = %4d", tr.data), UVM_LOW);

           endtask

endclass

**** UVM_LOW  points to Message logger with verbosity level LOW

**** component definition have the  string and parent definition

**** For object definition have only string definition