Title: Navigating your OPAC with Astrolabe and MARC
1Navigating your OPAC with Astrolabe and MARC
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- SUNY/LA Conference Workshop
- SUNY Maritime
- Maggie Horn, SUNY OLIS
2This is an Astrolabe
3And this is a sextant
- Also used for navigation!
4This is a MARC record
00638cam2200205Ia450000100130000000300060001300500
17000190080041000360400018000770820010000950900024
00105049000900129100003400138245011900172260004200
29130000290033374000230036270000350038599400120042
0ocm11830383OCoLC20060919091356.0850321s19
31 nyua 000 0 eng d_aKSU_cKSU_dOC
L 4_a817.4 _aPS3503.E49_bT8 1931
_aZ4FA1 _aBenchley, Robert,_d1889-1945.10_
a20,000 leagues under the sea, or, David
Copperfield /_cby Robert Benchley with
illustrations by Gluyas Williams. _aNew York
_bBlue Ribbon Books,_c1931. _a233 p.
_bill. _c21 cm.01_aDavid Copperfield.1
_aWilliams, Gluyas,_d1888-_eill.
_aC0_bZ4F
5- What does MARC mean anyway?
- Mysterious
- Arcane
- Recondite
- Curiosa
6- No, really, what does it mean?
- MAchine
- Readable
- Cataloging
- Thats all there is to it
7- Communication format
- For sharing records between libraries
- For creating displays on cards and OPACs
- For creating indexes in OPACS
- For data manipulation and data mining (statistics)
8This is a MARC record as were used to seeing it
9But what is all that gobbledygook
- Fields
- Entire string of information represented by tag
- Term is frequently used synonymously with tag
10MARC Terminology
- Tags
- Three digit number identifying the type of data
to be found in the field - Catalogers call a field by the tag 245 two
four five or two forty five, but not two hundred
forty five - When referring to a class of tags, we use x for
a wild card 6xx all tags in the six hundred
series - In ALEPH speak, when you need a wild card, you
use (6 any 6xx tag)
11MARC Terminology
- Indicators
- One digit code (number or blank), with special
instructions about the tag - Occupies the two spaces after the tag
- Use varies from tag group to tag group
- Referred to by catalogers as first and second
indicators - Always referred to as the separate numbers
- Always combined with the tag name
12MARC Terminology
- Subfields
- Consists of a delimiter and a code which
indicates kind of data within the field - Delimiter is a special character used to tell
system that code is coming up explain why - Delimiter may be represented as or or
- Code is a single letter or number
- Referred to as delimiter c or c or dagger
c or - Always used with tag name
- Definitions and uses of subfields vary across
tags but are similar within groups of tags
13MARC Terminology
- Control fields
- Coded information used by the system for
instantly identifying elements of the record - Referred to as fixed fields
- Defined length of the field (fixed get it?)
- with defined values for the codes
- Frequently unintelligible to the user but
critical for the system
14MARC key
- If you know the Dewey Decimal system breakdowns,
you can know MARC! - Tag
- 000 Control fields/Number Fields
- 1XX Main entry fields
- 2XX Title or title paragraph fields
- 3xx Description (collation) fields
15MARC key
- Tag
- 4XX Series Fields
- 5XX Note fields
- 6XX Subject fields
- 7xx Added entry fields (with links to other
records)
16MARC key
- Tag
- 8XX Series Fields these are fully authorized
series fields and Holdings fields, but were
not going there - 9XX Local use (including OCLC/RLIN) fields
- Actually any 9 tends to mean local e.g.
09x, 59x, 79x, 29x
17Fixed Fields
- Vary by format
- Two are required
- LDR
- 008
- In OCLC, these are seen as one, friendly field
18In OCLC
19In ALEPH, Cataloging
- LDR L nam2200277Ia450
- 008 L 870416t19761971njuab0010engd
20Using MARC
- Were going to decode some records now
- Well talk about how all this has an effect on
your catalog in the next section
21Presentation and Indexing
- Cataloging and MARC coding affect how
effectively your catalog operates - Even if your catalog is not online!
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22- Display and indexing are dependent on
- Content (including ISBD punctuation)
- Coding of MARC fields
- Local decisions
- Correct mapping of MARC fields with display
labels
23- The next slides demonstrate some choices made
for display
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29- The next slides show some problems that are
solely MARC coding - Primarily evident in browse indexes
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34- The next slides show problems in content of the
cataloging record which affect retrieval (i.e.
this is NOT the fault of the MARC coding)
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37- Lets go online now to see some more problems and
maybe fix a few
38Contact information
- Maggie Horn maggie.horn_at_suny.edu