ISO 25577:2013 pdf free
ISO 25577:2013 pdf free.Information and documentation – MarcXchange
In MarcXchange, the element “leader”is used for the ISO 2709 record label. Part of the ISO 2709 record label (positions 0 to 4 “record length” and positions 12 to 16 “base address of data”), contains information, which is only meaningful for the ISO 2709 record. It is recommended always to recalculate this information when converting from MarcXchange to ISO 2709.
The ISO 2709 directory has no counterpart in MarcXchange. When converting from MarcXchange to ISO 2709, this component has to be recalculated.
In the MarcXchange schema, the element “controlfield” is used for the ISO 2709 record identifier field and reference field while the element “datafield” is used for ISO 2709 data field.
This schema is an extension to ISO 2709. It allows the usage of the“datafield” element for all legal ISO 2709 tags, including 001 to 009, 00A to 00Z and 00a to 00z; and two attributes are introduced to specify the content of a record, i.e. “format” to specify the MARC format and “type” to specify the kind of record.
This schema states that subfield codes can consist of characters from ISO/IEC 10646, BMP row 00 (Basic Latin and Latin-1 Supplement).
There is one restriction. A special mode (identifier length = 0) of ISO 2709 operates with data fields without subfields. In the MarcXchange schema subfields are required, i.e. identifier length = 0 is not supported.
Figure 2 illustrates the structure of the MarcXchange schema. All elements have an optional attribute,named id, inherited from MARCXML.
The following are the description of elements and attributes.
a) Collection: a top level container element for zero or many record elements.
b) Record: a top level container element for the leader element and all of the controlfield and datafield elements which comprise the record. The record element has the following attributes:
1) Format (optional): identifies the MARC format (examples: MARC21, UNIMARC, danMARC2,
Ibermarc);
2) Type (optional): identifies the type of record (examples: bibliographic, authority, holdings,classification and community).
c) Leader: corresponds to ISO 2709 record label, 24 octets.
d) Controlfield: corresponds to ISO 2709 record identifier field (tag 001) and reference fields (tags 002 to 009 and 00A to 00Z). The controlfield element has one attribute.ISO 25577 pdf download.
