USMARC Concise Authority: Control Fields (00X)



Fields 001-008 contain the record control number and other control and coded information that are used in processing USMARC authority records. Each control field is identified by a field tag in the Directory and contains either a single data element or a series of fixed-length data elements identified by relative character position. Variable control fields contain neither indicator positions nor subfield codes.

001 - CONTROL NUMBER (NR)


The control number assigned by the organization creating, using, or distributing the record.

Example


001

n##86742756#

Go to top of document

003 - CONTROL NUMBER IDENTIFIER (NR)


The USMARC code for the organization whose control number is contained in field 001 (Control Number). The source of the code is Symbols of American Libraries that is maintained by the Library of Congress.

Example


003

DLC

Go to top of document

005 - DATE AND TIME OF LATEST TRANSACTION (NR)


Sixteen characters that indicate the date and time of the latest record transaction and serve as a version identifier for the record. The data is recorded according to Representation for Calendar Date and Ordinal Date for Information Interchange (ANSI X3.30) in the pattern yyyymmdd. The time is recorded according to Representations of Local Time of the Day for Information Interchange (ANSI X3.43) in the pattern hhmmss.f, expressed in terms of the 24-hour clock.

Example


005

19930901141236.0

Go to top of document

008 - FIXED-LENGTH DATA ELEMENTS (NR)


Forty character positions (00-39) that contain positionally-defined data elements that provide coded information about the record as a whole or about special aspects of the 1XX heading or 4XX/5XX tracing fields. Undefined character positions contain either a blank (#) or a fill character ( | ). Each defined character position must contain either a defined code or a fill character. The fill character is used in a defined character position when the National Level Requirement code is O (Optional) and no attempt is made to code the character position. Field 008 is not repeatable.

Character positions