<xs:element name="dataStart">
  <xs:annotation>
    <xs:documentation>Il periodo di validità della versione è indicato dalla data d'inizio e dalla data d'inizio della versione successiva, se presente</xs:documentation>
  </xs:annotation>
  <xs:simpleType>
    <xs:restriction base="xs:dateTime"/>
  </xs:simpleType>
</xs:element>

<xs:element name="dataType">
  <xs:annotation>
    <xs:documentation>Il tipo di dato memorizzato all'interno del DW</xs:documentation>
  </xs:annotation>
  <xs:simpleType>
    <xs:restriction base="xs:string"/>
  </xs:simpleType>
</xs:element>

<xs:element name="factNode">
  <xs:annotation>
    <xs:documentation>Il fatto d'interesse</xs:documentation>
  </xs:annotation>
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="name"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="formula" type="xs:string">
  <xs:annotation>
    <xs:documentation>La formula per la derivazione delle misure derivate, opzionale</xs:documentation>
  </xs:annotation>
</xs:element>

<xs:element name="from">
  <xs:simpleType>
    <xs:restriction base="xs:string"/>
  </xs:simpleType>
</xs:element>

<xs:element name="functionalDependence">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="from"/>
      <xs:element ref="to"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="history">
  <xs:complexType>
    <xs:sequence maxOccurs="unbounded">
      <xs:element ref="schemaVersion"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="IDVersion">
  <xs:simpleType>
    <xs:restriction base="xs:string"/>
  </xs:simpleType>
</xs:element>

<xs:element name="measure">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="dataType"/>
      <xs:element ref="name"/>
      <xs:element ref="formula" minOccurs="0"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="name">
  <xs:annotation>
    <xs:documentation>Tutti gli attributi all'interno della history hanno nomi univoci, quindi questo elemento funge da identificatore</xs:documentation>
  </xs:annotation>
  <xs:simpleType>
    <xs:restriction base="xs:string"/>
  </xs:simpleType>
</xs:element>

<xs:element name="property">
  <xs:annotation>
    <xs:documentation>Le proprietà che hanno una dipendenza funzionale diretta dal fatto rappresentano le dimensioni</xs:documentation>
  </xs:annotation>
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="name"/>
      <xs:element ref="dataType"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="schemaAUG">
  <xs:annotation>
    <xs:documentation>Lo schema AUG è identico nella forma allo schema graph</xs:documentation>
  </xs:annotation>
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="factNode"/>
      <xs:choice maxOccurs="unbounded">
        <xs:element ref="property"/>
        <xs:element ref="measure"/>
        <xs:element ref="functionalDependence"/>
      </xs:choice>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="schemaGraph">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="factNode"/>
      <xs:choice maxOccurs="unbounded">
        <xs:element ref="property"/>
        <xs:element ref="measure"/>
        <xs:element ref="functionalDependence"/>
      </xs:choice>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="schemaVersion">
  <xs:annotation>
    <xs:documentation>Ogni versione ha una validità temporale, uno SchemaGraph, uno Schema AUG ed un identificativo</xs:documentation>
  </xs:annotation>
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="IDVersion"/>
      <xs:element ref="dataStart"/>
      <xs:element ref="schemaGraph"/>
      <xs:element ref="schemaAUG" minOccurs="0"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="to">
  <xs:simpleType>
    <xs:restriction base="xs:string"/>
  </xs:simpleType>
</xs:element>