Re: arsclist Cataloging

["A. Ralph Papakhian" <papakhi@xxxxxxxxxxx>]

hi,
the record structure is explained in some detail
at:
http://www.loc.gov/marc/specifications/specrecstruc.html

the first group of numerics represent the leader/directory:

GENERAL RECORD STRUCTURE

The general structure of a record is represented schematically below.

Structure of a MARC 21 Record

LEADER  DIRECTORY  FT  CONTROL_NUMBER_FIELD  FT

      CONTROL_FIELD_1  FT   ...   CONTROL_FIELD_n  FT

          DATA_FIELD_1  FT   ...   DATA_FIELD_n  FT  RT

Each record begins with a leader, which is a fixed field containing
information for the processing of the record. Following the leader is the
directory, which is an index to the location of the variable fields
(control and data) within the record. The fields following the directory
are all variable fields. The first variable field is the control number
field, which contains an ASCII graphic character string uniquely
associated with the record by the organization transmitting the record.
Following the control number field are the rest of the control fields,
which contain information useful or required for the processing of the
record. Following the control fields are data fields, which contain
general data. A field terminator (FT), ASCII control character 1E(hex), is
used to terminate the directory and each variable field within the record.
A record terminator (RT), ASCII control character 1D(hex), is used as the
final character of the record, following the field terminator of the last
data field. These elements of the record are described in more detail in
the following sections.

--r

A. Ralph Papakhian, Indiana University Music Library
Bloomington, IN 47405 812/855-2970 papakhi@xxxxxxxxxxx
co-owner: MLA-L@xxxxxxxxxxxxxxxxxxxx

On Mon, 16 Dec 2002 stevenc@xxxxxxxxxxxxxx wrote:

> Now...
> 1) The first 264 bytes are numeric; are these one or a set of numbers for
> internal catalog use, and if so do they somehow relate to text-based
> lists or do they have meaning for the library staff?
> 2) The data record apparently represents an album set, not a record...
> correct?
> 3) I note a fair amount of information that doesn't seem to appear (unless
> it is in the form of the mysterious numbers mentioned). Does the system
> only track work, composer, director, album and disc numbers and the
> like, without noting matrix, take (also omitted from the RDI), conditions
> (and damage if any), and the like?
> 4) Is MARC actually a data format (in the sense of being a list of fields
> to be used) or are there further considerations to it? Does the .mrc file
> extension indicate it is also a file format, or is this being used for MARC
> records created at this particular institution?
> ...stevenc
> ----- Original Message -----
> From: "A. Ralph Papakhian" <papakhi@xxxxxxxxxxx>
> To: <ARSCLIST@xxxxxxxxxxxxxxxx>
> Sent: Saturday, December 14, 2002 11:39 AM
> Subject: Re: arsclist Cataloging
>
>
> > hi,
> > attached (i hope) is a "raw" marc record.
> > it's for Victor AM 257, created by the library of congress.
>
> -
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> http://www.arsc-audio.org/arsclist.html
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>
>

-
For subscription instructions, see the ARSC home page
http://www.arsc-audio.org/arsclist.html
Copyright of individual posting is owned by the author of the posting and
permission to re-transmit or publish a post must be secured
from the author of the post.