„Authority 045” változatai közötti eltérés

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:'''Second Indicator - Undefined'''
 
:'''Second Indicator - Undefined'''
Contains a blank (#).
+
::Contains a blank (#).
SUBFIELD CODES
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$a - Time period code
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:'''SUBFIELD CODES'''
Four-character alphanumeric code derived from the "Time Period Code Table" for B.C. and C.E. time periods.
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Each time period code associated with a heading is contained in a separate subfield $a.
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::'''$a - Time period code'''
Time Period Code Table
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:::Four-character alphanumeric code derived from the "Time Period Code Table" for B.C. and C.E. time periods.
B.C. (Before Common Era)
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:::Each time period code associated with a heading is contained in a separate subfield $a.
Code Time period
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a0 before 2999
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::'''Time Period Code Table'''
b0 2999-2900
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b1 2899-2800
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::''B.C. (Before Common Era)''
b2 2799-2700
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b3 2699-2600
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{|
b4 2599-2500
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!Code
b5 2499-2400
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!Time period
b6 2399-2300
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|-
b7 2299-2200
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|a0
b8 2199-2100
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|before 2999
b9 2099-2000
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|-
c0 1999-1900
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|b0
c1 1899-1800
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|2999-2900
c2 1799-1700
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|-
c3 1699-1600
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|b1
c4 1599-1500
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|2899-2800
c5 1499-1400
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|-
c6 1399-1300
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|b2
c7 1299-1200
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|2799-2700
c8 1199-1100
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|-
c9 1099-1000
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|b3
d0 999-900
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|2699-2600
d1 899-800
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|-
d2 799-700
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|b4
d3 699-600
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|2599-2500
d4 599-500
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|-
d5 499-400
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|b5
d6 399-300
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|2499-2400
d7 299-200
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|-
d8 199-100
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|b6
d9 99-1
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|2399-2300
 +
|-
 +
|b7
 +
|2299-2200
 +
|-
 +
|b8
 +
|2199-2100
 +
|-
 +
|b9
 +
|2099-2000
 +
|-
 +
|c0
 +
|1999-1900
 +
|-
 +
|c1
 +
|1899-1800
 +
|-
 +
|c2
 +
|1799-1700
 +
|-
 +
|c3
 +
|1699-1600
 +
|-
 +
|c4
 +
|1599-1500
 +
|-
 +
|c5
 +
|1499-1400
 +
|-
 +
|c6
 +
|1399-1300
 +
|-
 +
|c7
 +
|1299-1200
 +
|-
 +
|c8
 +
|1199-1100
 +
|-
 +
|c9
 +
|1099-1000
 +
|-
 +
|d0
 +
|999-900
 +
|-
 +
|d1
 +
|899-800
 +
|-
 +
|d2
 +
|799-700
 +
|-
 +
|d3
 +
|699-600
 +
|-
 +
|d4
 +
|599-500
 +
|-
 +
|d5
 +
|499-400
 +
|-
 +
|d6
 +
|399-300
 +
|-
 +
|d7
 +
|299-200
 +
|-
 +
|d8
 +
|199-100
 +
|-
 +
|d9
 +
|99-1
 +
|}
 +
 
 +
 
 
C.E. (Common Era)
 
C.E. (Common Era)
 
(Add 0, 1, 2, ... 9 to each alphabetic character for the decade)
 
(Add 0, 1, 2, ... 9 to each alphabetic character for the decade)

A lap 2011. november 28., 17:18-kori változata

Kezdőlap - A MARC21 authority formátum - Authority 01X-09X


First Indicator

Type of time period in subfield $b or $c
'#' - Subfield $b or $c not present
0 - Single date/time
1 - Multiple single dates/times
2 - Range of dates/times


Second Indicator

Undefined
'#' - Undefined


Subfield Codes

$a - Time period code (R)
$b - Formatted 9999 B.C. through C.E. time period (R)
$c - Formatted pre-9999 B.C. time period (R)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Time period code (subfield $a) and/or a formatted time period (subfield $b or $c) associated with a 15X heading in an established heading record or a 18X heading in a subdivision record.
Time period code in subfield $a is derived from the B.C. (Before Common Era) and/or C.E. (Common Era) lists in the Time Period Code Table provided under the description of subfield $a.

GUIDELINES FOR APPLYING CONTENT DESIGNATORS

INDICATORS
First Indicator - Type of time period in subfield $b or $c
Whether a subfield $b or $c is present in the field; and, when subfield $b or $c is present, the type of time period it contains. The values distinguish among a single date/time, multiple single dates/times, and a range of dates/times.
'#' - Subfield $b or $c not present
0 - Single date/time
Subfield $b and/or $c is present and contains a single date/time.
150 ##$aLunar petrology
045 0#$c2500000000
1 - Multiple single dates/times
Multiple $b and/or $c subfields are present, each containing a date/time. A range of dates/times is identified by value 2.
045 1#$bd1972$bd1975
[1972 and 1975]
2 - Range of dates/times
Two $b and/or $c subfields are present and together express a range of dates and/or times. Multiple single dates and/or times are identified by value 1.
150 ##$aShenandoah Valley Campaign, 1864 (May-August)
045 2#$bd186405$bd186408
150 ##$aAurignacian culture
045 2#$c25000$c15000
Second Indicator - Undefined
Contains a blank (#).
SUBFIELD CODES
$a - Time period code
Four-character alphanumeric code derived from the "Time Period Code Table" for B.C. and C.E. time periods.
Each time period code associated with a heading is contained in a separate subfield $a.
Time Period Code Table
B.C. (Before Common Era)
Code Time period
a0 before 2999
b0 2999-2900
b1 2899-2800
b2 2799-2700
b3 2699-2600
b4 2599-2500
b5 2499-2400
b6 2399-2300
b7 2299-2200
b8 2199-2100
b9 2099-2000
c0 1999-1900
c1 1899-1800
c2 1799-1700
c3 1699-1600
c4 1599-1500
c5 1499-1400
c6 1399-1300
c7 1299-1200
c8 1199-1100
c9 1099-1000
d0 999-900
d1 899-800
d2 799-700
d3 699-600
d4 599-500
d5 499-400
d6 399-300
d7 299-200
d8 199-100
d9 99-1


C.E. (Common Era) (Add 0, 1, 2, ... 9 to each alphabetic character for the decade) Code Time period e 1-99 f 100-199 g 200-299 h 300-399 i 400-499 j 500-599 k 600-699 l 700-799 m 800-899 n 900-999 o 1000-1099 p 1100-1199 q 1200-1299 r 1300-1399 s 1400-1499 t 1500-1599 u 1600-1699 v 1700-1799 w 1800-1899 x 1900-1999 y 2000-2099 For B.C. dates, the lowercase alphabetic character represents the millennium and the digit represents the century. If the century is not known, a hyphen (-) is used instead of a number. A single century or a period within a century is coded by repeating the appropriate two-character code to create the required four-characters.

151 #0$aRome$xHistory$yRepublic, 265-30 B.C. 045 ##$ad7d9

150 #0$aBronze age 045 ##$aa-c- [3000-1000 B.C.]

151 ##$aEgypt$xHistory$yEighteenth dynasty, ca. 1570-1320 B.C. 045 ##$ac4c6 For C.E. dates, the lowercase alphabetic character represents the century. A digit (0-9) is added to represent the decade. If the decade is not known, a hyphen (-) is used instead of a number. A single year or a period within a decade is coded by repeating the appropriate two-character code to create the required four characters.

151 #0$aGreat Britain$xHistory$yMedieval period, 1066-1485. 045 ##$ao6s8

150 #0$aBhopal Union Carbide Plant Disaster, Bhopal, India, 1984. 045 ##$ax8x8

150 #0$aCivilization, Modern$y20th century. 045 ##$ax-x-

150 #0$aCatalan literature$y16th-18th centuries. 045 ##$at-v-

151 ##$aGreece$xHistory$y146 B.C.-323 C.E. 045 ##$ad8h2

150 ##$aTwenty-first century$xForecasts. 045 ##$ay-y- $b - Formatted 9999 B.C. through C.E. time period Specific time period formatted as yyyymmddhh, preceded by a code for the era (c for B.C.; d for C.E.). Era and year are required components; the month, day, and hour are optional.

   era expressed as a code: c (B.C.), d (C.E.)
   year expressed as a four-digit number (0000 to 9999) right justified; unused positions contain zeros
   month expressed as a two-digit number (01 to 12) right justified; unused positions contain zeros
   day expressed as a two-digit number (01 to 31) right justified; unused positions contain zeros
   hour expressed as a two-digit number using the 24-hour clock (00 to 23) right justified; unused positions contain zeros

First indicator position values 0-2 specify whether the time period in subfield $b is a single date, multiple dates, or a range of dates. Each 9999 B.C. through C.E. time period associated with the heading is contained in a separate subfield $b.

151 ##$aFrance$xHistory$yRevolution, 1791-1797 045 2#$bd1791$bd1797

151 ##$aJapan$xHistory$yFebruary Incident, 1936 (February 26) 045 0#$bd19360226

151 ##$aChina$xHistory$y221 B.C.-960 C.E. 045 2#$ad7n6$bc0221$bd0960 $c - Formatted pre-9999 B.C. time period Formatted time period that consists of as many numeric characters as are needed to represent the number of pre-9999 years B.C. First indicator position values 0-2 specify whether the time period in subfield $c is a single date, multiple dates, or a range of dates. Each pre-9999 B.C. time period associated with the heading is contained in a separate subfield $c.

150 ##$aGeology, Stratigraphic$yMesozoic 045 2#$c225000000$c70000000 $6 - Linkage See description of this subfield in Appendix A: Control Subfields. $8 - Field link and sequence number See description of this subfield in Appendix A: Control Subfields.

INPUT CONVENTIONS

Punctuation - No marks of punctuation are used in field 045. Order of subfields - Subfield $c (Formatted pre-9999 B.C. time period) is input preceding subfield $b (Formatted 9999 B.C. through C.E. time period).

CONTENT DESIGNATOR HISTORY

Indicator 1 - Type of time period in subfield $b or $c [NEW, 1979]

$b - Chronological date/time [NEW, 1979] $c - Pre-9999 B.C. time period, formatted [NEW, 1987] Subfield $b was redefined for 9999 B.C. through C.E. time periods when subfield $c was defined for pre-9999 B.C. time periods. Prior to that time, all dates/times were contained in subfield $b.


Kezdőlap - A MARC21 authority formátum - Authority 01X-09X