Try It Yourself - SyntaxStudy Editor

HTML / CSS / JS

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

<xs:simpleType name="ISBNType">
        <xs:restriction base="xs:string">
            <xs:pattern value="\d{3}-\d-\d{3}-\d{5}-\d"/>
            <xs:length value="17"/>
        </xs:restriction>
    </xs:simpleType>

<xs:simpleType name="YearType">
        <xs:restriction base="xs:integer">
            <xs:minInclusive value="1800"/>
            <xs:maxInclusive value="2100"/>
        </xs:restriction>
    </xs:simpleType>

<xs:simpleType name="PriceType">
        <xs:restriction base="xs:decimal">
            <xs:minInclusive value="0"/>
            <xs:totalDigits value="8"/>
            <xs:fractionDigits value="2"/>
        </xs:restriction>
    </xs:simpleType>

<xs:simpleType name="TagListType">
        <xs:list itemType="xs:token"/>
    </xs:simpleType>

<xs:simpleType name="FlexibleCount">
        <xs:union memberTypes="xs:nonNegativeInteger">
            <xs:simpleType>
                <xs:restriction base="xs:string">
                    <xs:enumeration value="unknown"/>
                </xs:restriction>
            </xs:simpleType>
        </xs:union>
    </xs:simpleType>

</xs:schema>