<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

    <!-- File: owms-types.xsd
          Function: this XML-scheme declares some simple types that are used for components of the metadata standard 
          for Dutch government information: the Overheid.nl Web Metadata Standaard (OWMS).
          More information: see metadata.overheid.nl. -->

	<xs:simpleType name="DateTimeFormat">
		<xs:union memberTypes="xs:date xs:dateTime"/>
	</xs:simpleType>

	<xs:simpleType name="NonEmptyString">
		<xs:restriction base="xs:string">
			<xs:minLength value="1"/>
		</xs:restriction>
	</xs:simpleType>

	<xs:simpleType name="SchemeName">
		<xs:restriction base="xs:QName">
			<xs:pattern value="(overheid|\p{Ll}+):\p{Lu}\p{L}+"/>
		</xs:restriction>
	</xs:simpleType>

	<xs:simpleType name="URI">
		<xs:restriction base="xs:anyURI">
			<xs:minLength value="1"/>
		</xs:restriction>
	</xs:simpleType>
</xs:schema>