Overview

When creating TEI/XML with oXygen XML Editor, the following template is generated.

<<<<???sT/xxxcE<<TmmmhIt/t/EllleetetI--mxiexe>vmmamH<it<xeootlef/H>b/trddynaifeob>seepsdl<<<iad<oille=eet/p/s/ldypdon"rDituposee>>ynhhsh>et<ib<uu<oDrS>=rr=tslttlpbrpue>o"ee"tceili>lc>rsm1ffhp>StecPieIcce.==t:tlSaucDne>0""t/mettbaefDt"hhp/t>miltsoeett:w>Ttoiicrsxett/wi>nco>mctnpp/wtSana>c::p.lttStho/utemitied/re<tomoriwwli/>ntnenww.-t>.gwwociIa<=..c.tnb/"ttlolfopUeecreou>Tii.g>rtF--o/m-ccrnat8..gsth"oo//ie?rrd1o>ggs.ns//d0<orrl"/uee/>prlls>ceeceaah<sse/eemp//a>xxtmmrll/ntt"ee?ii>//ccuussttoomm//sscchheemmaa//rreellaaxxnngg//tteeii__aallll..rrnngg""ttyyppee==""aapppplliiccaattiioonn//xxmmll""schematypens="http://relaxng.org/ns/structure/1.0"?>

I was curious about the following difference, so I am sharing the results of querying GPT-4.

<<??sxxcmmhlle--mmmaootddyeepllenhhsrr=ee"ffh==t""thhptt:tt/pp/::p/u/rwwlww.wwo..cttleecii.--occr..goo/rrdggs//drrlee/llseecaahsseeem//axxtmmrll/ntt"ee?ii>//ccuussttoomm//sscchheemmaa//rreellaaxxnngg//tteeii__aallll..rrnngg""ttyyppee==""aapppplliiccaattiioonn//xxmmll""schematypens="http://relaxng.org/ns/structure/1.0"?>

Answer

The difference between the 2nd and 3rd lines is the namespace specified in the schematypens attribute. Details are explained below.

2nd Line

<?xml-modelhref="http://www.tei-c.org/release/xml/tei/custom/schema/relaxng/tei_all.rng"type="application/xml"schematypens="http://relaxng.org/ns/structure/1.0"?>
  • href: http://www.tei-c.org/release/xml/tei/custom/schema/relaxng/tei_all.rng
  • type: application/xml
  • schematypens: http://relaxng.org/ns/structure/1.0

This line specifies a RELAX NG schema for the TEI (Text Encoding Initiative) document. RELAX NG is a schema language for validating the structure of XML documents.

3rd Line

<?xml-modelhref="http://www.tei-c.org/release/xml/tei/custom/schema/relaxng/tei_all.rng"type="application/xml"schematypens="http://purl.oclc.org/dsdl/schematron"?>
  • href: http://www.tei-c.org/release/xml/tei/custom/schema/relaxng/tei_all.rng
  • type: application/xml
  • schematypens: http://purl.oclc.org/dsdl/schematron

This line specifies a Schematron schema for the same TEI document. Schematron is a schema language for validating the content of XML documents, particularly used for validating business rules and other complex conditions.

Summary of Differences

  • Namespace: The 2nd line uses http://relaxng.org/ns/structure/1.0, pointing to a RELAX NG schema. The 3rd line uses http://purl.oclc.org/dsdl/schematron, pointing to a Schematron schema.
  • Validation method: The 2nd line’s RELAX NG validates the structure of XML, while the 3rd line’s Schematron validates more complex conditions such as XML content and business rules.

Therefore, the difference is that the 2nd line specifies a schema for structural validation, while the 3rd line specifies a schema for content validation.

References

Please also refer to the following article.

Summary

We hope this serves as a useful reference.