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model -1 architecture

        delegates the  request to right business apps
  performs required persistence operation  (curd operation )
 collects response content form the corresponding business apps
   the above architecture describe us to design  single jsp page responsible for accepting client request ,forwarding it to the right business app collecting response content  form the corresponding business app preparing and desplaying the presentaion on the browser
 the  above architecture is simple but the problem is presentation logic and controlling logic  combining  implemented inside  one single page  i.e, we don't have any proper separation in b/w   controlling logic and presentation logic  to remove the above  described  problem  sum introduced one more architecture with a name model-2   
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