<relation>

<relation> 指定された参加者グループ間の関連性の種類を示す． 15.2.2 The Participant Description
モジュール namesdates — 13 Names, Dates, People, and Places
グローバル属性の他 att.datable (att.datable.w3c (@period, @when, @notBefore, @notAfter, @from, @to)) (att.datable.iso (@when-iso, @notBefore-iso, @notAfter-iso, @from-iso, @to-iso)) att.editLike (@evidence, @source) (att.dimensions (@unit, @quantity, @extent, @precision, @scope) (att.ranging (@atLeast, @atMost, @min, @max)) ) (att.responsibility (@cert, @resp)) att.naming (@role, @nymRef) (att.canonical (@key, @ref))
type 当該関係を分類する．例えば，社会的関係，個人的関係など．
状態 任意
データ型 

<rng:ref name="data.enumerated"/>
data.enumerated
提案する値は以下の通り:
social
社会的役割を伴う関係．
personal
個人的役割を伴う関係．例えば，親類，婚姻など． [初期値]
other
他の関係．
name 当該関係の種類名を示す．
状態 必須
データ型 

<rng:ref name="data.enumerated"/>
data.enumerated
値 an open list of application-dependent keywords
active identifies the ‘active’ participants in a non-mutual relationship, or all the participants in a mutual one.
状態 任意
データ型 1–∞ occurrences of  

<rng:ref name="data.pointer"/>
data.pointer
空白文字で区切られる
値 a list of identifier values for participant or participant groups
mutual supplies a list of participants amongst all of whom the relationship holds equally.
状態 使えるならば必須
データ型 1–∞ occurrences of  

<rng:ref name="data.pointer"/>
data.pointer
空白文字で区切られる
値 a list of identifier values for participant or participant groups
passive 一方向の関係における‘受動的な’参加者を指定す る．
状態 任意
データ型 1–∞ occurrences of  

<rng:ref name="data.pointer"/>
data.pointer
空白文字で区切られる
値 a list of identifier values for participant or participant groups
当該モジュールを使用するもの
listEvent listNym listOrg listPerson listPlace relationGrp
下位
core: desc
宣言 

<rng:element name="relation">
 <rng:ref name="att.global.attributes"/>
 <rng:ref name="att.datable.w3c.attributes"/>
 <rng:ref name="att.datable.iso.attributes"/>
 <rng:ref name="att.editLike.attributes"/>
 <rng:ref name="att.dimensions.attributes"/>
 <rng:ref name="att.ranging.attributes"/>
 <rng:ref name="att.responsibility.attributes"/>
 <rng:ref name="att.naming.attributes"/>
 <rng:ref name="att.canonical.attributes"/>
 <rng:optional>
  <rng:attribute name="type" a:defaultValue="personal">
   <rng:choice>
    <rng:value>social</rng:value>
    <rng:value>personal</rng:value>
    <rng:value>other</rng:value>
    <rng:data type="Name"/>
   </rng:choice>
  </rng:attribute>
 </rng:optional>
 <rng:attribute name="name">
  <rng:ref name="data.enumerated"/>
 </rng:attribute>
 <rng:choice>
  <rng:optional>
   <rng:attribute name="active">
    <rng:list>
     <rng:ref name="data.pointer"/>
     <rng:zeroOrMore>
      <rng:ref name="data.pointer"/>
     </rng:zeroOrMore>
    </rng:list>
   </rng:attribute>
  </rng:optional>
  <rng:optional>
   <rng:attribute name="mutual">
    <rng:list>
     <rng:ref name="data.pointer"/>
     <rng:zeroOrMore>
      <rng:ref name="data.pointer"/>
     </rng:zeroOrMore>
    </rng:list>
   </rng:attribute>
  </rng:optional>
 </rng:choice>
 <rng:optional>
  <rng:attribute name="passive">
   <rng:list>
    <rng:ref name="data.pointer"/>
    <rng:zeroOrMore>
     <rng:ref name="data.pointer"/>
    </rng:zeroOrMore>
   </rng:list>
  </rng:attribute>
 </rng:optional>
 <rng:optional>
  <rng:ref name="desc"/>
 </rng:optional>
</rng:element>
element relation
{
   att.global.attributes,
   att.datable.w3c.attributes,
   att.datable.iso.attributes,
   att.editLike.attributes,
   att.dimensions.attributes,
   att.ranging.attributes,
   att.responsibility.attributes,
   att.naming.attributes,
   att.canonical.attributes,
   attribute type { "social" | "personal" | "other" | xsd:Name }?,
   attribute name { data.enumerated },
   (
      attribute active { list { data.pointer, data.pointer* } }?
    | attribute mutual { list { data.pointer, data.pointer* } }?
   ),
   attribute passive { list { data.pointer, data.pointer* } }?,
   desc?
}
Schematron

<s:report test="@active and @mutual">Only one of the attributes
'active' and 'mutual' may be supplied</s:report>
Schematron

<s:report test="@passive and not(@active)">the attribute 'passive'
may be supplied only if the attribute 'active' is
supplied</s:report>
例
<relation
  type="social"
  name="supervisor"
  active="#p1"
  passive="#p2 #p3 #p4"/>

This indicates that the person with identifier p1 is supervisor of persons p2, p3, and p4.
例
<relation type="personal" name="friends" mutual="#p2 #p3 #p4"/>

This indicates that p2, p3, and p4 are all friends.
解説
属性activeか属性mutualのどちらかのみが付与さ れる．属性passiveは，属性activeが付与されて いる場合にのみ使用される．どのスキーマ言語でも，全ての構成要素が使 われるというものではない．