Voyager tables and authority control

Gary L. StrawnNorthwestern University Library

mrsmith@northwestern.edu

Zip file

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?