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Voyager tables and authority control
Gary L. StrawnNorthwestern University Library
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http://www.library.northwestern.edu public/Files/Helsinki2.ZIP
Today’s PowerPointWritten-out version of talkDetailed description of table
structure
Introductory
Explanation of the way things workNot justification, not criticism I was not involved in the design!Reverse-engineeringTime is short todayAdditional information
From table to bib records
Auth records
Bib records
Index
Tables
BIB_INDEXAUTH_INDEXBIB_TEXTMFHD_MASTERHEADINGSUBDIVISION
Today
Tables that contain controlled headings
What goes into themHow used in searchingAuthority control products
Types of indexes
N Name (100, 700, etc.)T Title (730, 440, etc.)E Name-title (700, 800, etc.)S Subject (600, 610, etc.)
Listed in INDEX_TYPE table
Types of headings (selected)
N, E: p (personal name); c (corporate name)
T: t (series title); a (non-series title)S: a (LCSH); c (MeSH)
Listed in HEADING_TYPE table
Simple bibliographic record #1
Fields of interest: 100 (240)
Bibliographic 100 field
$a Paoli, Betty, $d 1814-1894.Normalized form:
PAOLI BETTY 1814 1894 Index type: N (Name)Heading type: p (personal)
Simple bibliographic record #2
Fields of interest: 100 (245)
Bibliographic 100 field
$a Paoli, Betty, $d 1814-1894.Normalized form:
PAOLI BETTY 1814 1894 Index type: N (Name)Heading type: p (personal)
Simple bibliographic record #3
Fields of interest: 100 (245) 440 600 650
Headings
WOZONIG KARIN S 1970 (N, p)SONDERPUBLIKATIONEN … (T, t)PAOLI BETTY 1814 1894 (S, a)AUTHORS AUSTRIAN 19TH CENTURY
BIOGRAPHY (S, a)
So far we have
1. PAOLI … (N, p; 2 bib records)2. WOZONIG … (N, p)3. SONDERPUBLIKATIONEN (T, t)4. PAOLI … (S, a)5. AUTHORS … (S, a)
Tables for bibliographic-derived headings
HEADING table
BIB_HEADING table
Bib records
Tying headings to bibliographic records: BIB_HEADING table
Heading 1 Bib 1 Heading 1 Bib 2 Heading 2 Bib 3 Heading 3 Bib 3 Heading 4 Bib 3 Heading 5 Bib 3
Simple authority record #1
Fields of interest: 100 400s008/11: a (LCSH)008/14: a (index type: N)008/15: a (index type: S)008/16: b (index type: T; but not here)
Index entries for this authority record
1. PAOLI BETTY 1814 1894 (N, p)4. PAOLI BETTY 1814 1894 (S, a)6-7. GLUCK BABETTE ELISABETH 1814
1894 (N, p and S, a)8-9. GLUCK BARBARA ELISABETH 1814
1894 (N, p and S, a)
Tables for authority-derived headings
HEADING table
AUTH_HEADING table
Auth records
Reference type codes
A: established headingS: see referenceA: ‘earlier’ see also referenceB: ‘later’ see also referenceG: ‘broader’ see also reference
Listed in REFERENCE_TYPE table
Tying headings to authority records: AUTH_HEADING table
Heading 1 Auth 1: established Heading 4 Auth 1: established Heading 6 Auth 1: see reference Heading 7 Auth 1: see reference Heading 8 Auth 1: see reference Heading 9 Auth 1: see reference
Tables for main headings
HEADING table
AUTH_HEADING table
Auth records
BIB_HEADING table
Bib records
Bringing together headings
Search dialog corresponds to table structure
Paoli as name
Paoli as subject
Simple authority record
Fields of interest: 130 410008/11: a (LCSH)008/14: a (T, a)008/15: a (S, a)008/16: a (T, t)
Index entries for this authority record
10-11, 3. SONDERPUBLIKATIONEN DER GRILLPARZER GESELLSCHAFT (3 entries: T, a; S, a; T, t)
12-13. GRILLPARZER GESELSCHAFT SONDERPUBLIKATIONEN DER GRILLPARZER GESELLSCHAFT (2 entries: E, c; S, a)
Searching implications
Name/title authority record
Fields of interest: 100 400008/11: a (LCSH)008/14: a (index type: E)008/15: a (index type: S)008/16: b (none)
Index entries for this authority record
14. PAOLI BETTY 1814 1894 POEMS (E, p)
15. PAOLI BETTY 1814 1894 POEMS (S, a)
16. PAOLI BETTY 1814 1894 GEDICHTE (E, p)
17. PAOLI BETTY 1814 1894 GEDICHTE (S, a)
Name/title bibliographic heading
Bibliographic 100 plus 240 field
$a Paoli, Betty, $d 1814-1894. $a Poems
Normalized form: PAOLI BETTY 1814 1894 POEMS
Index type: Name/titleHeading type: PersonalMatches #14
Name/title bibliographic heading
Bibliographic 100 plus 245 field
$a Paoli, Betty, $d 1814-1894. $a Gedichte
Normalized form: PAOLI BETTY 1814 1894
GEDICHTE Index type: Name/titleHeading type: PersonalMatches #16
Conflict and match
Reformulation for bibliographic
Extract one heading for each complete indexed field and field combination
Index type depends on tagHeading type depends on index type
Reformulation for authority
Extract one heading for each complete indexed field
One copy of each heading for each ‘a’ in 008/14-16, which determines index type
Heading type depends on index type
Characteristics
One entry for each combination of:Normalized headingIndex typeHeading type
Match implies linkageWhole heading indexed
Questions that can be answered
Which records contain a given heading?Which headings have the same stem?Headings with no authority records?Are there duplicate authority records?Do references conflict with bibliographic
headings?
Subdivisions are different yet similar
Bibliographic: each 6XX $v $x $y $zAuthority: each 1XX, 4XX, 5XX $v $x
$y $zNo index type (all the same)Heading type: 2nd indicatorSubdivision type: subfield codeAll of ‘same’ subdivision collapse into
one main table entry
Changed heading
Subdivision extraction
19TH CENTURY (a, y)BIOGRAPHY (a, v)
Subdivision extraction
ECONOMIC ASPECTS (a, x)ZIMBABWE (a, z)ZVIMBA COMMUNAL LAND (a, z)CHIRAU COMMUNAL LAND (a, z)
Subdivision extraction
BIOGRAPHY (a, v; established) AUTOBIOGRAPHY (a, v; reference) CORRESPONDENCE REIMINSCENCES ETC
(a, v; reference) LEGENDS AND STORIES (a, v; reference)
Subdivision extraction
ACTORS BIOGRAPHY (S, a; established)
BIOGRAPHY (a, v; not established)
Tables for subdivisions
SUBDIVISION table
AUTH_SUBDIV table
BIB_SUBDIV table
More tables for subdivisions
SUBDIVISION table
AUTH_SUBDIV table
BIB_SUBDIV table
SUBDIV_HEADING table
HEADING table
Subdivision tables in searching
Subdivision tables in searching
Indexing summary
Heading extractionCodingTable structureUse in searchingUse in reportsDetails in ZIP file
Questions?
