how to use CCSID info to get corresponding data as normal text?

Hi,
 
I am given with the following information:
- Field length, Binary(4)
- Field CCSID, Binary(5)
- Field Data, char(100)
 
The above field data is encoded using CCSID given by Field CCSID. How do I get 
corresponding data in normal English form? Any pointers to APIs would be 
greatly appreciated.
 
Similarly, I am given with another set of information:
- Field length, Binary(4)
- Field CCSID, Binary(5)
- Field Country or Region ID, char(2)
- Field Language ID, char(3)
- Field Data, char(100)
 
In the above information, Region ID and Language ID are also given, how are 
these to be used to convert the Field data into a usable form? What would 
happen if I just use the CCSID, length, data portion and the API for the first 
scenario ignoring the Region ID and Language ID?
 
Please help.
 
Regards,
P.Prasad


                
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