857 Electronic Archive Location and Access (R)

First Indicator - Access method

Access method to the archived electronic resource. If the archived resource is available by more than one access method, the field is repeated with data appropriate to each method. The methods defined are the main TCP/IP (Transmission Control Protocol/Internet Protocol) protocols. When recording a URL in subfield $u, the value corresponds to the access method (URL scheme), which is also the first element in the string.

 - No information provided

1 - FTP

Access to the archived electronic resource is through the File Transfer Protocol (FTP).

4 - HTTP

Access to the archived electronic resource is through the Hypertext Transfer Protocol (HTTP).

7 - Method of specified in subfield ‡2

Access to the archived electronic resource is through a method other than the defined values and for which an identifying code is given in subfield $2 (Source of access).

Second Indicator - Relationship

Relationship between an archived electronic resource at the location identified in field 857 and the bibliographic resource described in the record as a whole.

 - No information provided

No information is provided about the relationship of the archived electronic resource identified in field 857 to the bibliographic resource described by the record as a whole.

0 - Resource

Record describes an electronic resource. Electronic location in field 857 is for the archived electronic resource described by the record as a whole. If the electronic location in field 857 is for one or more archived component parts of the resource represented by the record as a whole, use second indicator value 3 (Component part(s) of resource).

1 - Version of resource

The bibliographic record describes a tangible resource, e.g., a printed book or a CD-ROM. The electronic location in field 857 is for an archived electronic version of the resource described by the record as a whole.

2 - Related resource

Electronic location in field 857 is for an archived electronic resource that has a clear, specific, and direct bibliographic relationship to the bibliographic resource described by the record as a whole but is not a component part of the resource. For resources that have only a subject relationship to the resource described, use 6XX fields. When there is uncertainty whether a resource may be a component part of the whole or a related resource, prefer second indicator value 2.

3 - Component part(s) of resource

Record describes an electronic resource. The electronic location in field 857 is for one or more archived component parts of the electronic resource described by the record as a whole. The component parts are portions of the resource, such as a table of contents or a sample chapter. Consider each of multiple fields 857 that add up to a complete representation of the archived electronic resource to be a component part. When appropriate, use subfield $3 to specify the component part(s) to which the field applies. When there is uncertainty whether a resource may be a component part of the whole or a related resource, prefer second indicator value 2 (Related resource).

4 - Version of component part(s) of resource

Record describes a tangible resource, e.g., a book or CD-ROM. The electronic location in field 857 is for an archived electronic version of one or more component parts of the resource described by the record as a whole. The component parts are electronic versions of portions of the resource, such as a table of contents or a sample chapter. When appropriate, use subfield $3 to specify the component part(s) to which the field applies. When there is uncertainty whether a resource may be a component part of the whole or a related resource, prefer second indicator value 2 (Related resource).

8 - No display constant generated

‡b - Name of archiving agency (NR)

Agency responsible for the Web archive or digital archive repository.

‡c - Name of Web archive or digital archive repository (NR)

The name by which the Web archive or digital archive repository is known.

‡d - Date range of archived material (NR)

The subfield is intended primarily for archived electronic continuing resources and other dynamic resources to provide information about the range of dates during which the archived material was issued. The dates are specified according to Extended Date/Time Format (EDTF). The start date of the archived material should always be mentioned when known; the end date only if the material described in the record is no longer being archived.

Multiple date ranges can be provided in a single 857 $d by separating them with ";". The reason for these gaps, if known, may be provided in 857 $x or 857 $z.

857    43$bInternet Archive$d1964/2008;2011/..
857    40$bHathiTrust Digital Library$d2020-01/2023-02

‡f - Archive completeness (NR)

The subfield is intended primarily for archived electronic continuing resources or other archived dynamic resources. It contains information about how often or how many times an electronic continuing resource has been harvested. This information enables the user to infer the archived material’s completeness for the date range in $d when coupled with the resource’s frequency. If providing the number of times a resource has been harvested, provide the date this information was obtained.

857    41$bScholars Portal$fComplete
857    43$bInternet Archive$fSaved multiple times per day as of 2022-09-22
857    41$bLibrary of Congress$fSaved 14150 times since 1997-01-01 as of 2023-01-31

‡g - Persistent identifier (R)

Persistent identifier (PID) which enables search and retrieval of a resource from a Web archive or digital archive repository using existing Internet protocols. It is assigned to the resource for automated access and other resolution services by a PID resolver. PIDs should be provided as actionable hyperlinks (e.g., HTTP URI format).

If a PID resolves to more than one URI, these URIs may be provided in the same 857 field, with repeated subfield $u.

‡h - Non-functioning Uniform Resource Identifier (R)

Uniform Resource Identifier (URI), for any archive or repository that has ceased to exist.

Subfield $h may be repeated if there is more than one non-functioning URI. A note on the status change (including the date) may be added in either subfield $x or subfield $z, depending on the local policy.

‡l - Standardized information governing access (R)

The subfield contains standardized information about the access status of a resource. The information may be in the form of a value from a controlled vocabulary, or a Uniform Resource Identifier (URI). If the information is a value from a controlled vocabulary, it is preceded by the appropriate value from the list of Access Restriction Term Source Codes, enclosed in parentheses. When the information is given in the form of a Web retrieval protocol, e.g., HTTP URI, no preceding parenthetical is used.

This subfield is intended to contain information which is an equivalent to that recorded using subfields $f, $2 and $u of field 506.

‡m - Contact for access assistance (R)

Name of a contact for assistance in accessing a resource at the host specified in subfield $b. For addresses relating to the content of the resource itself (i.e. the item represented by the title recorded in field 245) rather than access assistance, field 270 is used. If the address data is the same, use field 270.

‡n - Terms governing access (R)

The subfield contains textual information about the access status of a resource.

This subfield is intended to contain information which is an equivalent to that recorded using subfield $a of field 506.

‡q - Electronic format type (R)

Identification of the electronic format type and version. Electronic format type should be specified with a code from the list of registered Internet Media Types (MIME types), taken from: IANA Media Types. If necessary (e.g., in order to specify a file format version to support access or digital preservation) additional information, such as PRONOM Unique Identifier (PUID) codes, may be included in addition to the information provided by the MIME Type by repeating subfield $q.

‡r - Standardized information governing use and reproduction (R)

The subfield contains standardized information about the use and reproduction rights of a resource. The information may be in the form of a value from a controlled vocabulary, or a Uniform Resource Identifier (URI). If the information is a value from a controlled vocabulary, it is preceded by the appropriate value from the list of Access Restriction Term Source Codes, enclosed in parentheses. When the information is given in the form of a Web retrieval protocol, e.g., HTTP URI, no preceding parenthetical is used.

This subfield is intended to contain information which is an equivalent to that recorded using subfields $f, $2 and $u of field 540.

‡s - File size (R)

Size of the file(s) as stored in the archive indicated in subfield $c. It is generally expressed in terms of 8-bit bytes (megabytes, gigabytes).

‡t - Terms governing use and reproduction (R)

The subfield contains textual information about the use and reproduction rights of a resource.

This subfield is intended to contain information which is an equivalent to that recorded using subfield $a of field 540.

‡u - Uniform Resource Identifier (R)

Uniform Resource Identifier (URI), which provides standard syntax for locating an object using existing Internet protocols or by resolution of a persistent identifier (PID).

Subfield $u may be repeated if more than one URI is recorded.

URIs which no longer function to provide access to the described resource may be transferred to 857 $h.

‡x - Nonpublic note (R)

Note relating to the electronic location of the source identified in the field. The note is written in a form that is not adequate or intended for public display. It may also contain processing information about the file at the location specified.

‡y - Link text (R)

Used for display in place of the URL in subfield $u. When subfield $y is present, applications should use the contents of subfield $y as the link instead of the content of subfield $u when linking to the destination in subfield $u. The use of the link text is independent of any decision concerning the second indicator value.

‡z - Public note (R)

Note relating to the electronic location of the source identified in the field. The note is written in a form that is adequate or intended for public display.

‡2 - Access method (NR)

Access method when the first indicator position contains value 7. Code from: Electronic Access Methods Code List.

‡3 - Materials specified (NR)

Part of the described material to which the field applies

857    42$3Finding aid$uhttps://www.loc.gov/ammem/ead/jackson.sgm

‡5 - Institution to which field applies (NR)

See Control Subfields for a description of subfield ‡5.

‡6 - Linkage (NR)

See Control Subfields for a description of subfield ‡6.

‡7 - Access status (NR)

Code indicating the availability of access to the networked electronic resource the address of which appears in subfield $u. Subfield $7 applies to all subfields $u present in the field.

0 - Open access

     The networked electronic resource is freely and openly accessible online to everyone, without restriction, login, or payment.

1 - Restricted access

     The networked electronic resource is not freely and openly accessible online.

u - Unspecified

z - Other

     857    40$3HathiTrust Digital Library$uhttp://catalog.hathitrust.org/api/vo...c/1654047.html$70

‡8 - Field link and sequence number (R)

See Control Subfields for a description of subfield ‡8.