GMD processing §
Here is a summary of the GMD processing that is used by TMQ in various software modules. ¶
Since many GMDs are 'made-up' by the cataloger, not all of the data extracted from this field is retained in some PLP crosschecks. ¶
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Osmosis GMD Processing §
a copy of the 245 field is extracted from the record
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subfield $h is extracted from the 245 field
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the plural form of any GMD listed in ACCR2 is replaced with its singular form (eg. 'pictures' becomes 'picture')
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the following replacements are made:
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'computer file' becomes 'electronic resource'
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'website' becomes 'electronic resource'
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'interactive multimedia' becomes 'electronic resource'
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'map' becomes 'cartographic material'
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'globe' becomes 'cartographic material'
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'large print' becomes 'text large print'
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'videocassette' becomes 'videorecording'
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'video recording' becomes 'videorecording'
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'dvd videorecording' becomes 'videorecording'
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'dvd' becomes 'videorecording'
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'sound cassette' becomes 'sound recording'
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'compact disc' becomes 'sound recording'
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If any of these replacements are made, the copy of the 245 field in the record being checked is updated with the change. ¶
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Subfield $h is extracted from the copy of the 245 field obtained above ¶
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Normalization §
If the GMD contains '(braille)', or any subject heading contains the word 'braille', set the GMD for that record to 'braille'
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all parenthetical qualifiers are extracted, then deleted (eg., '[text (large print)]' becomes '[text]'
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any data following the closing bracket is deleted (in the event a subfield $b or $c was omitted)
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If a record contains a normalized GMD that matches any GMD strings in the following list (this list is based upon an LCRI, and so reflects an LC policy), its GMD is set to null:
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ACTIVITY, ART (eg. ART ORIGINAL, ART REPRODUCTION), CARTOGRAPHIC,
CHART, DIORAMA, FLASH, GAME, MICROSCOPE, MODEL, MULTIMEDIA, MUSIC,
OBJECT, PICTURE, REALIA, SLIDE, TECHNICAL, TEXT, TOY, TRANSPARENCY
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Processing rules §
If one record has the GMD 'electronic resource', and the other record has either the GMD 'microform', or no GMD at all, do not fail the crosscheck
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If, at this point, the GMDs in the records being compared are not the same, the crosscheck fails.
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