XML Schema All In One
XSD
An XML Schema describes the structure of an XML document.
The XML Schema language is also referred to as XML Schema Definition (XSD).
https://en.wikipedia.org/wiki/XML_schema
https://www.w3.org/XML/Schema
https://www.w3.org/TR/xmlschema-1/
XML Schema Definition
An XML Schema describes the structure of an XML document, just like a DTD.
An XML document with correct syntax is called "Well Formed".
An XML document validated against an XML Schema is both "Well Formed" and "Valid".
https://www.w3schools.com/xml/xml_schema.asp
demos
<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="note">
<xs:complexType>
<xs:sequence>
<xs:element name="to" type="xs:string"/>
<xs:element name="from" type="xs:string"/>
<xs:element name="heading" type="xs:string"/>
<xs:element name="body" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
https://www.w3schools.com/xml/schema_intro.asp
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refs
https://www.cnblogs.com/xgqfrms/p/15869698.html#5212841
https://codesandbox.io/s/typescript-declare-module-bug-z479fm?file=/index.d.ts:425-757
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