XML Schema Definition – XSD Introduction

XML Schema Definition – XSD Introduction

An XML Schema:

  • defines elements that can appear in a document
  • defines attributes that can appear in a document
  • defines which elements are child elements
  • defines the order of child elements
  • defines the number of child elements
  • defines whether an element is empty or can include text
  • defines data types for elements and attributes
  • defines default and fixed values for elements and attributes

XML Schema supports data types. With support for data types:

  • It is easier to describe allowable document content
  • It is easier to validate the correctness of data
  • It is easier to work with data from a database
  • It is easier to define data facets (restrictions on data)
  • It is easier to define data patterns (data formats)
  • It is easier to convert data between different data types

Resources:

W3Schools XML Schema

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