PREMIS Events
PREMIS EVENTS ENTITY
eventidentifier
eventidentifierType
eventidentifierType will be the MARC institution code for the National Library of Wales, WlAbNL.
eventidentifierValue
NLW will maintain a list of eventidentifierValue values. Here it is:
CREATE_DERIVED_FILES-001 = creating reference files from archive file.
CREATE_DERIVED_FILES-002 = creating thumbnail files from archive file.
CREATE_DERIVED_FILES-003 = creating zoom files from archive file.
CREATE_DERIVED_FILES-004 = creating zoom files from reference file.
CREATE_DERIVED_FILES-005 = creating 50% PNG files from archive file.
CREATE_DERIVED_FILES-006 = creating AbbyFineReader from archive file.
CREATE_DERIVED_FILES-007 = creating Text file from archive file.
CREATE_DERIVED_FILES-008 = creating ALTO file from AbbyFineReader file.
DISSEMINATION-001 = retrieving an object from repository storage and making it available to users.
FIXITY_CHECK-001 = fixity check using UNIX checksum programs.
FORMAT_VALIDATION-001 = format validation using Jhove.
FORMAT_VALIDATION-002 = format validation using Droid.
FORMAT_VALIDATION-003 = format validation using MediaInfo.
IMAGE_OPTIMISATION-001 = image optimisation using i2S Book Restorer software.
INGESTION-001 = ingestion through NLW Vital ingest programme.
MERGE_DATA = merging of additional data with data currently held by NLW e.g. data received back from external supplier e.g. Jouve.
MESSAGE_DIGEST_CALCULATION-001 = message digest calculaton using UNIX checksum programs.
REPLICATION-001 = creating a copy of an object that is, bitwise, identical to the original.
VIRUS_CHECK-001 = virus check using UNIX virus checking programs.
eventType
NLW will maintain a list of eventType values. This list is mainly taken from the suggestions in the Premis data dictionary. Types added at NLW are indicated with (NLW). Here it is:
capture = the process whereby a repository actively obtains an object [CAP]
compression = the process of coding data to save storage space or transmission time [COM]
create derived files = the process of creating derived files from archive file [CDF] (NLW)
deaccession = the process of removing an object from the inventory of a repository [DEA]
decompression = the process of reversing the effects of compression [DEC]
decryption = the process of converting encrypted data to plaintext [DCP]
deletion = the process of removing an object from repository storage [DEL]
digital signature validation = the process of determining that a decrypted digital signature matches an expected value [DSV]
dissemination = the process of retrieving an object from repository storage and making it available to users [DI]
fixity check = the process of verifying that an object has not been changed in a given period [FC]
ingestion = the process of adding objects to a preservation repository [I]
merge = the process of merging enhanced data received back from external supplier with what is already held with NLW [MRG]
message digest calculation = the process by which a message digest (“hash”) is created [MDC]
migration = a transformation of an object creating a version in a more contemporary format [M]
normalization = a transformation of an object creating a version more conducive to preservation [N]
replication = the process of creating a copy of an object that is, bit-wise, identical to the original [R]
validation = the process of comparing an object with a standard and noting compliance or exceptions [V]
virus check = the process of scanning a file for malicious programs [VC]
image optimisation = the process of improving image quality [IO] (NLW)
eventOutcome
Value will be composed of event type abbreviation with event outcome code, e.g. FC-001, successful fixity check; I-004, ingestion failure due to unknown hardware issue; VC-005, virus check failure due to unknown software issue. [Need to look at how to record 'expected' failures]
success 001
partial success 002
failure 003 (known data)
004 (unknown hardware)
005 (unknown software)
006 (unknown data)
Implemented outcomes
These outcome codes will need to be added to as required to deal mainly with new error conditions.
CDF-001 = derived files successfully created
CDF-003 = derived files not successfully created
DI-001 = Object disseminated successfully
DI-006 = Unable to disseminate object
I-001 = successful ingestion
FC-001 = checksum matched
FC-003 = checksum failed to match
FV-001 = valid format
FV-003 = invalid format
MDC-001 = successful message digest calculation
MRG-001 = merging of data has been successful
RI-001 = replication of object successful
VC-001 = no virus found
VC-003 = virus found
Agent Entity
<agentIdentifierType>
agentIdentifierType will be the MARC institution code for the National Library of Wales, WlAbNL except where using external resources where URI or other uniquely assigned identifier is available. The agentIdentifierType will then use those values.
<agentIdentifierValue>
agentIdentifierValue will be a controlled textual form of name.
List of local and external agentIdentifierValues
Need to add information and details concerning various programs.
CDAS_SOFTWARE = CDAS (CD Accessioning Software)
DROID_SOFTWARE = DROID (Digital Record Object Identification) http://sourceforge.net/projects/droid/
JOUVE_SOFTWARE = software used by Jouve in creation of ALTO files.
JOUVE = This notes that external company Jouve was involved in the event.
KAKADU_SOFTWARE = Kakadu software used to generate JPEG2000 files (jp2)http://www.kakadusoftware.com/
NLW_INGEST-001 = uk.org.llgc.fedora.ingest.IngestProgram v.1.0
NLW_MERGE_SOFTWARE-001 = software developed by NLW to merge data received from Jouve with original data held by NLW.
NORTON-001 = Norton virus check v. ###
http://hul.harvard.edu/jhove/ = Jhove v. 1.0
UNIX_TOOLS-001 = Run UNIX Checksum on an Image
JAVA_TOOLS-001 = Run JAVA Checksum on an Image
SOFTWARE-001 = Photoshop
SOFTWARE-002 = Zoomify Enterprise Version 3.0
SOFTWARE-003 = ABBYY FineReader Engine
SOFTWARE-004 = AbbyyToAlto
SOFTWARE-005 = i2S Book Restorer
HARDWARE-001 = Apple Mac Pro
