Event_XSD.xsd

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

<xs:element name="root" type="rootType" />

<xs:complexType name="rootType">
    <xs:sequence minOccurs="0" maxOccurs="unbounded">
        <xs:element name="event" type="eventType" />
    </xs:sequence>
</xs:complexType>

<xs:complexType name="eventType">
    <xs:sequence maxOccurs="1">
        <xs:element name="event_id" type="IDType" />
        <xs:element name="event_name" type="stringType" />
        <xs:element name="event_desc" type="stringType" />
        <xs:element name="event_tags" type="tagsType" />
        <xs:element name="event_type_participation" type="participationType" />
        <xs:element name="event_timing" type="timingType" />
        <xs:element name="event_organizer_email" type="emailType" />
        <xs:element name="event_organizer_phone" type="phoneType" />
    </xs:sequence>
</xs:complexType>

<xs:simpleType name="IDType">
    <xs:restriction base="xs:integer">
        <xs:minInclusive value="0"></xs:minInclusive>
    </xs:restriction>
</xs:simpleType>

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

<xs:complexType name="tagsType">
    <xs:sequence maxOccurs="5">
        <xs:element name="tag" />
    </xs:sequence>
</xs:complexType>

<xs:attribute name="id" >
    <xs:simpleType >
        <xs:restriction base="xs:string">
        </xs:restriction>
    </xs:simpleType>
</xs:attribute>

<xs:simpleType name="participationType">
    <xs:restriction base="xs:string">
        <xs:enumeration value="Solo"></xs:enumeration>
        <xs:enumeration value="Team"></xs:enumeration>
    </xs:restriction>
</xs:simpleType>

<xs:simpleType name="timeType">
    <xs:restriction base="xs:dateTime" />
</xs:simpleType>

<xs:simpleType name="emailType">
    <xs:restriction base="xs:string">
        <xs:pattern value="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"></xs:pattern>
    </xs:restriction>
</xs:simpleType>

<xs:simpleType name="phoneType">
    <xs:restriction base="xs:string">
        <xs:pattern value="\+?\d[\d -]{8,12}\d"></xs:pattern>
    </xs:restriction>
</xs:simpleType>