Component A subordinate part of [described archival] materials...An intellectually logical section of... described [archival] materials...A stage within a hierarchical description of [archival materials]. Unittitle The name, either formal or supplied, of described [archival] materials. May consist of a word, phrase, character, or group of characters...The <unittitle> is comparable to ISAD(G) element 3.1.2 and MARC field 245 SKOS Straw Man
Profiling/Subsetting Base Schema + Subset(s) Endorsed/Official? Facilitate User created? Similar to approaches of other tagsets (TEI; JATS) Schematron – Rules-based Validation – XPATH Based
Schematron: Example If the value of a level attribute is "otherlevel', then the otherlevel attribute must be used ERROR: ELEMENT NOT ALLOWED ERROR: Mixed content is not allowed
Tools Migration – DTD to Schema – 2002 to EAD X Validation (e.g., Schematron) Conversions? – “EAD Tidy” – EAD to RDF Pipelines (XProc) Packaging?