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5.D.1.SCAN. Functional Area D: Level 1 Use of SCAN

The Z39.50 SCAN Service is required at Functional Area D: Level 1 Search and Retrieval. The following requirements apply for SCAN:

  • Z-clients must support Term and DisplayTerm, and display DisplayTerm if sent. If DisplayTerm is not sent, Term must be displayed.
  • Required values for parameter preferredPositionInResponse are 0 and 1.
  • Stepsize is 0.

Three SCANs are defined:

  • Name -- Exact Match
  • Title -- Exact Match
  • Subject -- Exact Match

Unlike the other searches specified in this Profile, it is not necessary to specify the Relation, Completeness and Truncation attributes of a SCAN.

Guidance in using terms found from a SCAN in a subsequent search can be found at the Maintenance Agency site as a Related Specification/Contribution http://lcweb.loc.gov/z3950/agency/contributions/2.html

5.D.1.SCAN.1. Name -- Exact Match

Uses: To browse an ordered list of name headings.
The termlist for a Name Exact Match SCAN is:

Attribute Type Attribute Values Attribute Names
Use (1) 1002 name
Position (3) 1 first in field
Structure (4) 1 phrase

5.D.1.SCAN.2. Title -- Exact Match

Uses: To browse an ordered list of complete titles.
The termlist for a Title Exact Match SCAN is:

Attribute Type Attribute Values Attribute Names
Use (1) 4 title
Position (3) 1 first in field
Structure (4) 1 phrase

5.D.1.SCAN.3. Subject -- Exact Match

Uses: To browse an ordered list of complete subject headings.
The termlist for a Subject Exact Match SCAN is:

Attribute Type Attribute Values Attribute Names
Use (1) 21 subject
Position (3) 1 first in field
Structure (4) 1 phrase

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