| 4.
Identifiers for Collections |
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| • | DC CD AP says |
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| – | The presence of
an identifier is "Optional, but |
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| recommended" |
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| – | If present,
"A collection identifier must be a URI, and the |
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| use of a URI
scheme that has been registered with IANA |
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| is preferred". |
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| • | Proposal to
develop collection identifier scheme |
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| (ISCI) under ISO
TC 46 |
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| – | based on ISIL |
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