Hi, self teaching myself xsd and my head is spinning with design patterns, I was looking for feedback as to if this document has been designed well or badly thanks in advance.

<?xml version="1.0" encoding="utf-8" ?><!--Created with Liquid XML Studio - FREE Community Edition 7.1.4.1284 (http://www.liquid-technologies.com)--><xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:element name="SampleSchema"> <xs:annotation> <xs:documentation>A sample schema.</xs:documentation> </xs:annotation> <xs:complexType> <xs:sequence> <xs:element name="UserDetails" type="UserDetailsType" /> <xs:element name="SearchDetails"> <xs:annotation> <xs:documentation>Details about the travel method and type os fares.</xs:documentation> </xs:annotation> <xs:complexType> <xs:sequence> <xs:element name="MethodOfTravel" type="MethodOfTravelType" /> <xs:element name="Fares" type="FaresType" /> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="JourneyDetails" type="JourneyDetailsType" /> </xs:sequence> </xs:complexType> </xs:element> <xs:complexType name="UserDetailsType"> <xs:annotation> <xs:documentation>Client details.</xs:documentation> </xs:annotation> <xs:sequence> <xs:element name="CompanyId" type="CompanyIdType" /> <xs:element name="UserId" type="UserIdType" /> </xs:sequence> </xs:complexType> <xs:complexType name="CompanyIdType"> <xs:annotation> <xs:documentation>Two letter company identifier.</xs:documentation> </xs:annotation> <xs:attribute name="Id" type="TwoLetterCode" use="required" /> </xs:complexType> <xs:complexType name="UserIdType"> <xs:annotation> <xs:documentation>Six character (Alpha-Numeric) user identifier.</xs:documentation> </xs:annotation> <xs:attribute name="Id" type="SixLetterCode" use="required" /> </xs:complexType> <xs:complexType name="MethodOfTravelType"> <xs:annotation> <xs:documentation>Methods of travel available.</xs:documentation> </xs:annotation> <xs:sequence> <xs:element name="Bus" type="SearchAttribute" /> <xs:element name="Train" type="SearchAttribute" /> <xs:element name="Plane" type="SearchAttribute" /> <xs:element name="Boat" type="SearchAttribute" /> </xs:sequence> </xs:complexType> <xs:complexType name="SearchAttribute"> <xs:attribute name="Search" type="xs:boolean" use="required" /> </xs:complexType> <xs:complexType name="FaresType"> <xs:attribute name="View" type="FaresTypeAttribute" use="required" /> </xs:complexType> <xs:simpleType name="FaresTypeAttribute"> <xs:annotation> <xs:documentation>Which fares budget or all fares.</xs:documentation> </xs:annotation> <xs:restriction base="xs:string"> <xs:enumeration value="BUDGET" /> <xs:enumeration value="ALL" /> </xs:restriction> </xs:simpleType> <xs:complexType name="JourneyDetailsType"> <xs:annotation> <xs:documentation>Contains the journey details.</xs:documentation> </xs:annotation> <xs:sequence> <xs:element name="DeparturePoint" type="ThreeLetterCode" /> <xs:element name="DepartureDate" type="Date" /> <xs:element minOccurs="0" name="DepartureTime" type="Time" /> <xs:element name="ArrivalPoint" type="ThreeLetterCode" /> <xs:element minOccurs="0" name="ReturningDate" type="Date" /> <xs:element minOccurs="0" name="ReturningTime" type="Time" /> </xs:sequence> <xs:attributeGroup ref="JourneyDetailsAttributes" /> </xs:complexType> <xs:attributeGroup name="JourneyDetailsAttributes"> <xs:annotation> <xs:documentation>Attribute group for journey details.</xs:documentation> </xs:annotation> <xs:attribute name="DateFlexible" type="FlexibleAttribute" use="required" /> <xs:attribute name="TimeFlexible" type="FlexibleAttribute" use="required" /> </xs:attributeGroup> <xs:simpleType name="FlexibleAttribute"> <xs:restriction base="xs:string"> <xs:enumeration value="Y" /> <xs:enumeration value="N" /> </xs:restriction> </xs:simpleType> <xs:simpleType name="TwoLetterCode"> <xs:annotation> <xs:documentation>Two character alpha code.</xs:documentation> </xs:annotation> <xs:restriction base="xs:string"> <xsattern value="[A-Z]{2}" /> </xs:restriction> </xs:simpleType> <xs:simpleType name="ThreeLetterCode"> <xs:annotation> <xs:documentation>Three character alpha code.</xs:documentation> </xs:annotation> <xs:restriction base="xs:string"> <xsattern value="[A-Z]{3}" /> </xs:restriction> </xs:simpleType> <xs:simpleType name="SixLetterCode"> <xs:annotation> <xs:documentation>Three character alpha-numeric code.</xs:documentation> </xs:annotation> <xs:restriction base="xs:string"> <xsattern value="[A-Z0-9]{6}" /> </xs:restriction> </xs:simpleType> <xs:simpleType name="Date"> <xs:annotation> <xs:documentation>Date in DDMMMYYYY format.</xs:documentation> </xs:annotation> <xs:restriction base="xs:string"> <xsattern value="[0-9]{2}[A-Z]{3}[0-9]{4}" /> </xs:restriction> </xs:simpleType> <xs:simpleType name="Time"> <xs:annotation> <xs:documentation>Time in HHMM format.</xs:documentation> </xs:annotation> <xs:restriction base="xs:int"> <xs:minInclusive value="0000" /> <xs:maxInclusive value="2359" /> </xs:restriction> </xs:simpleType></xs:schema>

Sorry about the formatting it loses its "pretty print" when I paste it, is there a way to format it without doing it by hand?