Map Development Area (MDA)
Location:
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internet
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ldap
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x-500
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Types:
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history
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directory service within the OSI model -- idea of global, distributed database
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history
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was supposed to complement X.400 (email) for global white and yellow pages
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Comment:
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look up information about users (white-pages: addresses, email, fax, ....) -- and services (yellow-pages: plumbing, printing, ...)
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experience
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far too complicated, heavy-weight
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Comment:
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organisations would run their own X.500 service -- can be part of a global directory structure -- is structured in a "tree" hierarchy
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