1. Voyager tables and authority control
Gary L. Strawn
Northwestern University Library

2. Zip file
public/Files/Helsinki2.ZIP
Today’s PowerPoint
Written-out version of talk
Detailed description of table structure

3. Introductory Explanation of the way things work
Not justification, not criticism
I was not involved in the design!
Reverse-engineering
Time is short today
Additional information

4. From table to bib records
Auth records
Index
Bib records

5. Tables
BIB_INDEX
AUTH_INDEX
BIB_TEXT
MFHD_MASTER
HEADING
SUBDIVISION

6. Today Tables that contain controlled headings What goes into them
How used in searching
Authority control products

7. 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

8. 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

9. Simple bibliographic record #1
Fields of interest: 100 (240)

10. Bibliographic 100 field $a Paoli, Betty, $d 1814-1894.
Normalized form:
PAOLI BETTY
Index type: N (Name)
Heading type: p (personal)

11. Simple bibliographic record #2
Fields of interest: 100 (245)

12. Bibliographic 100 field $a Paoli, Betty, $d 1814-1894.
Normalized form:
PAOLI BETTY
Index type: N (Name)
Heading type: p (personal)

13. Simple bibliographic record #3
Fields of interest: 100 (245)

14. Headings WOZONIG KARIN S 1970 (N, p) SONDERPUBLIKATIONEN … (T, t)
PAOLI BETTY (S, a)
AUTHORS AUSTRIAN 19TH CENTURY BIOGRAPHY (S, a)

15. So far we have PAOLI … (N, p; 2 bib records) WOZONIG … (N, p)
SONDERPUBLIKATIONEN (T, t)
PAOLI … (S, a)
AUTHORS … (S, a)

16. Tables for bibliographic-derived headings
HEADING table
BIB_HEADING table
Bib records

17. 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

18. Simple authority record #1
Fields of interest: s
008/11: a (LCSH)
008/14: a (index type: N)
008/15: a (index type: S)
008/16: b (index type: T; but not here)

19. Index entries for this authority record
1. PAOLI BETTY (N, p)
4. PAOLI BETTY (S, a)
6-7. GLUCK BABETTE ELISABETH (N, p and S, a)
8-9. GLUCK BARBARA ELISABETH (N, p and S, a)

20. Tables for authority-derived headings
HEADING table
AUTH_HEADING table
Auth records

21. Reference type codes A: established heading S: see reference
A: ‘earlier’ see also reference
B: ‘later’ see also reference
G: ‘broader’ see also reference
Listed in REFERENCE_TYPE table

22. 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

23. Tables for main headings
HEADING table
AUTH_HEADING table
BIB_HEADING table
Auth records
Bib records

24. Bringing together headings

25. Search dialog corresponds to table structure

26. Paoli as name

27. Paoli as subject

28. Simple authority record
Fields of interest:
008/11: a (LCSH)
008/14: a (T, a)
008/15: a (S, a)
008/16: a (T, t)

29. Index entries for this authority record
10-11, 3. SONDERPUBLIKATIONEN DER GRILLPARZER GESELLSCHAFT (3 entries: T, a; S, a; T, t)
GRILLPARZER GESELSCHAFT SONDERPUBLIKATIONEN DER GRILLPARZER GESELLSCHAFT (2 entries: E, c; S, a)

30. Searching implications

31. Name/title authority record
Fields of interest:
008/11: a (LCSH)
008/14: a (index type: E)
008/15: a (index type: S)
008/16: b (none)

32. Index entries for this authority record
14. PAOLI BETTY POEMS (E, p)
15. PAOLI BETTY POEMS (S, a)
16. PAOLI BETTY GEDICHTE (E, p)
17. PAOLI BETTY GEDICHTE (S, a)

33. Name/title bibliographic heading

34. Bibliographic 100 plus 240 field
$a Paoli, Betty, $d $a Poems
Normalized form:
PAOLI BETTY POEMS
Index type: Name/title
Heading type: Personal
Matches #14

35. Name/title bibliographic heading

36. Bibliographic 100 plus 245 field
$a Paoli, Betty, $d $a Gedichte
Normalized form:
PAOLI BETTY GEDICHTE
Index type: Name/title
Heading type: Personal
Matches #16

37. Conflict and match

38. Reformulation for bibliographic
Extract one heading for each complete indexed field and field combination
Index type depends on tag
Heading type depends on index type

39. 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

40. Characteristics One entry for each combination of:
Normalized heading
Index type
Heading type
Match implies linkage
Whole heading indexed

41. 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?

42. Subdivisions are different yet similar
Bibliographic: each 6XX $v $x $y $z
Authority: each 1XX, 4XX, 5XX $v $x $y $z
No index type (all the same)
Heading type: 2nd indicator
Subdivision type: subfield code
All of ‘same’ subdivision collapse into one main table entry

43. Changed heading

44. Subdivision extraction
19TH CENTURY (a, y)
BIOGRAPHY (a, v)

45. Subdivision extraction
ECONOMIC ASPECTS (a, x)
ZIMBABWE (a, z)
ZVIMBA COMMUNAL LAND (a, z)
CHIRAU COMMUNAL LAND (a, z)

46. Subdivision extraction
BIOGRAPHY (a, v; established)
AUTOBIOGRAPHY (a, v; reference)
CORRESPONDENCE REIMINSCENCES ETC (a, v; reference)
LEGENDS AND STORIES (a, v; reference)

47. Subdivision extraction
ACTORS BIOGRAPHY (S, a; established)
BIOGRAPHY (a, v; not established)

48. Tables for subdivisions
SUBDIVISION table
AUTH_SUBDIV table
BIB_SUBDIV table

49. More tables for subdivisions
SUBDIVISION table
AUTH_SUBDIV table
SUBDIV_HEADING table
BIB_SUBDIV table
HEADING table

50. Subdivision tables in searching

51. Subdivision tables in searching

52. Indexing summary Heading extraction Coding Table structure
Use in searching
Use in reports
Details in ZIP file

53. Questions?