automated, electronic, digital, virtual

[Aleksander Radwanski]

Dear Web4lib Members,

I have a question concerned terminology used in informaton technology.
Last month in Poland we had a conference about electronic library.
There were discussions about proper terminology. I think Polish terms
should be correlated with appropriate terms in English. Could you be
so kind and explain the terms given below and it's mutual relations: 
- automated library 
- electronic library 
- digital library 
- virtual library 
Are they precisely defined?

I will deeply appreciate your assistance.
Aleksander Radwanski
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Ossolineum * Poland * http://www.oss.wroc.pl
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