Why not use W3C XML Schema?
W3C Schema versions of the Archiving and Interchange DTD and the Journal Publishing DTD are now available. The DTD authors considered writing the “master” version of these tag sets in W3C XML Schema before we wrote the DTD. We understand that many people want to use XML schemas, and that there are XML tools that use only W3C XML Schema. We chose to express the “master” version of these tags sets in DTD form for several reasons (described below). This does not mean that there won’t be versions in W3C XML Schema, and in RELAX NG, and perhaps in other schema languages as well. Remember: Our double mandate for the archival DTD was • to maintain the intellectual content of extant XML- and SGML-tagged documents and • to make it easy for publishers and archives to transform their documents from XML and SGML formats into our XML tagset. Among the reasons we chose to express the model in DTD syntax first are: • MODULARITY – We modularized the DTD in ways that allow, for example, multiple Table
