freq 

The FREQ rule part identifies the type of recurrence rule.

Attribute Information

Used By

Attribute Group recurrenceRuleAttributes

Source 

<xs:attribute name="freq" use="required">
  <xs:annotation>
    <xs:documentation>The FREQ rule part identifies the type of recurrence rule.</xs:documentation>
  </xs:annotation>
  <xs:simpleType>
    <xs:restriction base="xs:string">
      <xs:enumeration value="SECONDLY"/>
      <xs:enumeration value="MINUTELY"/>
      <xs:enumeration value="HOURLY"/>
      <xs:enumeration value="DAILY"/>
      <xs:enumeration value="WEEKLY"/>
      <xs:enumeration value="MONTHLY"/>
      <xs:enumeration value="YEARLY"/>
    </xs:restriction>
  </xs:simpleType>
</xs:attribute>

Sample