2010-02-09T05:48:24Zhttp://info-uri.info/registry/OAIHandler
pronom
Namespace of PRONOM Unique Identifiers
2005-11-30
The National Archives
Kew, Richmond, Surrey, UK, TW9 4DU
http://www.nationalarchives.gov.uk/
Adrian Brown
pronom@nationalarchives.gov.uk
+44 (0) 20 8392 5257
A PRONOM Unique Identifier (PUID) is composed of two
elements, the PUID type, and the actual identifier. The PUID
type identifies the class of representation information to
which the identifier refers, where each identifier is unique
within that class. Thus, both elements are required to
construct a unique identifier.
The syntax may be expressed in formal BNF notation as
follows:
<puid> ::= <puid_type> '/' <identifier>
<puid_type> ::= 'fmt'
<identifier> ::= <fragment> | <identifier> <fragment>
<fragment> ::= <digit> | <letter>
<letter> ::= 'a' – 'z'
<digit> ::= '0' - '9'
The PUID type is expressed as a lowercase alphanumeric
string. The only PUID type currently defined is "fmt", which
denotes that the identifier relates to a file format. Other
types may be defined in the future. The identifier itself is
expressed as a lowercase alphanumeric string of arbitrary
length. The PUID type and identifier are separated by a
forward slash.
http://www.nationalarchives.gov.uk/aboutapps/pronom/pdf/pronom_unique_identifier_scheme.pdf
The PUID type is case sensitive and must be normalised to lower case.
http://www.nationalarchives.gov.uk/aboutapps/pronom/pdf/pronom_unique_identifier_scheme.pdf
fmt/42
info:pronom/fmt/42
The PUID namespace consists of identifiers which correspond to
entries in the PRONOM technical registry. Every identifier is unique within
the namespace, and is persistently and unambiguously bound to a single registry
entry. The PUID type element identifies the type of registry entry (e.g. a file
format), and the identifier element denotes an instance of that type within the
registry (e.g. the record for a specific file format).
http://www.nationalarchives.gov.uk/aboutapps/pronom/pdf/pronom_unique_identifier_scheme.pdf
N/A