[script1.pl->
  Makes ItemData from some fields
  and puts it as rawdata in a database
] 
---> DBI --->

<--- DBI <---
[script2.pl->
  reads ItemData from a database
  sends this data over a socket
  which is connected with script2
  script1.pl knows nothing about
  the structure of ItemData and also
  doesn want to know.
] 
--> TCP/IP ---> 
<-- TCP/IP <---
[script3.pl
  recives ItemData and knows how ItemData is formed
  script3.pl will get all the fields in ItemData
  and will use this to talk to hardware with it ..
  (for example a FAX modem or an SMS machine or
  whatever .. not importand yet) 
]