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MARC Leader

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Discover use of MARC Leader for import and export in OLIB.
Tag(s) N/A  
Indicators   Not Applicable
Subfields   Not Applicable
Imports to   The Leader data is processed into various parts of the Title during import. See below for a breakdown of this information.
Exports from   The Leader data is generated from various parts of the Title during export. See below for a breakdown of this information.

With the Leader information, the position of the data in the tag determines its meaning.

For the MARC21 notes on this portion of the record, refer here.



Example value		 
              1         2   
    012345678901234567890123
    02217cam  2200421Ka 4500
Position(s) Sample Notes
00 - 04 02217 The size of the record in bytes. Note that some characters (eg: ©, £) occupy more than one byte.
05 c Record Status. This imports to and exports from the Title's MARC Record Status field
06 a Type of Record. This imports to and exports from the Title's Record Type. It is also used to aid determination of the Media (Sub-)Type for the incoming title. If the value is not set on the Title during export, the value is retrieved from the Media (Sub-)Type.
07 m Bibliographic Level. This imports to and exports from the Title's BIB Level. It is also used to aid determination of the Media (Sub-)Type for the incoming title. If the value is not set on the Title during export, the value is retrieved from the Media (Sub-)Type.
08 c Type of Control.
09 a Character coding scheme. Conversion from MARC-8 will be handled automatically during import. Records will be exported using UTF-8.
10, 11 22 Indicator and Subfield code counts. These are set to "2" during export.
12-16 00421 Base address of Data. This advises the system reading the record where in the record the directory ands and the data starts.
17 K Encoding Level. This imports to and exports from the Title's MARC21 Encoding Level field. It can be used as part of the logic to determine whether or not a matching record during import should overwrite the existing record. For values of this position which relate specifically to WorldCat records, refer here
18 a Descriptive cataloging form. This imports to and exports from the Title's Descriptive Cat Form field.
19 # Multipart resource record level. This imports to and exports from the Title's Linked Record Req field. It is also used to aid determination of the Media (Sub-)Type for the incoming title. If the value is not set on the Title during export, the value is retrieved from the Media (Sub-)Type.
20-23 4500 Length of the length-of-field portion; Length of the starting-character-position portion; Length of the implementation-defined portion; Undefined.
These relate to the construction of the directory entries and are always "4500"