data.key

data.key defines the range of attribute values expressing a coded value by means of an arbitrary identifier, typically taken from a set of externally-defined possibilities.
Module tei — 1 The TEI Infrastructure
Used by
Class:
Element:
  • w/@lemma
Declaration 

<rng:define name="data.key">
 <rng:data type="string"/>
</rng:define>
data.key = string
Note
Information about the set of possible values for an attribute using this datatype may (but need not) be documented in the document header. Externally defined constraints, for example that values should be legal keys in an external database system, cannot usually be enforced by a TEI system. Similarly, because the key is externally defined, no constraint other than a requirement that it consist of Unicode characters is possible.