Difference Between XML and XSD

Markup languages are those coding languages that are used to annotate and design a document that is based on content distinguishable from the format.

XML and XSD are also used for designing purposes of a document. These amenities do the task of formatting the overall view of a page. 


The main difference between XML and XSD is that XML is a markup language whereas XSD is based upon XML and does the structure defining and formatting of the view of the document. XSD also generates the documents based upon XML while XML defines a set of rules for encoding a document.


XML is an Extensible Markup Language. XML does the encoding of a set of rules that are used for formatting the view of a document and describes the text formatting in a digital document.

Unlike HTML, XML offers more flexibility in terms of using tags and designing texts in documents.

XSD is an XML Schema Definition. It works upon XML. XSD is used for specifying how to formally describe the elements used in XML.

XML Schema Definition also generates documents of XML by considering them as programming objects. It defines a way in which elements and attributes work in XML.

Comparison Table Between XML and XSD

Parameters of Comparison XMLXSD
DefinitionXML is Extensible Markup Language for formatting and designing text in a digital document.XSD is an XML Schema Definition that is based on XML and defines attributes and elements in XML documents.
Data interpretationXML does not ensure the data interpretation in an XML document because it is used for formatting.XSD ensures that the data used in the XML document and its features are properly interpreted.
StructureXML has a set of rules encoding a document for formatting the text and structure of that document’s view.XSD defines attributes, elements and structures that appear in an XML document.
Error detectionXML is not good at detecting and catching errors thrown by incorrect usage of tags and formats.XSD performs with better error detection and rectification algorithm than XML.
ValidationAn XML document cannot be made compatible with XSD and does not support validation under its name.An XSD document allows validation under the name of an XML document because it is based upon XML.

What is XML?

XML is abbreviated as Extensible Markup Language. It is a format that defines the data storage and formatting of the structures that are used in a document.

XML also uses tags and quotes just like other markup languages but the tags are not already predefined like other markup languages.

It offers liability to users by making them create their tags as name tags and work upon them throughout the entire document. XML is good at formatting the text and the designs that are used in documents.

The documents that are designed with XML are referred to as XML documents after designation. XML is strict and volatile with the usage of termination tags and quotes unlike HTML and other languages.

XML gives attention to details that make a document an emphasized one. XML also falls under the category of Standard Generalized Markup Language and works with its compatibility factor with HTML, XHTML, and XSLT.

It has a vast variety of applications that use XML as a standard and primary source of formatting and designing through a markup language. XML is widely known for the simplicity it offers in solving complex problems relating to documents and their formatting with an overall view. 

What is XSD?

XSD is abbreviated as XML Schema Definition. XSD clears from its abbreviation that it is based upon XML for its existence.

The purpose of XSD to be used as a Schema Definition Language is that it offers manipulation in attributes, elements, and tags that offer formatting and changes in XML documents.

XSD defines a mechanism that describes the format and content of the XML instances.

As it is a Schema Defining language, it also works upon the concept like the order in which elements and their tags are to be appearing with repetition or no repetition.

It defines whether an element can be repeated, or if it is possibly appearing in the scheme, etc. XSD is basically for designing purposes.

The Markup Language XML has XSD as a Schema Defining language for modification with the attributes and elements of the formatting.

Besides these, XSD offers a better data interpretation, error detection, and ranging, and a better overall structure for the designing of the XML document.

It also has a valid validation for XML projects. In a nutshell, XSD is a helping hand for the XML projects in regard of XML’s text designing and formatting of the document’s view.

Main Differences Between XML and XSD

  1. XML is a basic markup language like HTML for formatting documents whereas XSD is just a feature language of XML for designing.
  2. XML is a compulsory and mandatory language for its purposes whereas XSD is not compulsory or strict to apply in XML documents.
  3. XML allows the validation of a node using another node whereas XSD doesn’t allow us to validate a node.
  4. XML has its topurposes but it doesn’t allow a framework whereas XSD is the data structure and definition framework on XML.
  5. XML is the first step for framing a document whereas XSD is the sticking force between the formatted document and the tools for designing that document.


Though XSD is based and written over XML, it has been a much more important language for the features and rich use in designing the attributes and elements of the text in an XML document.

The markup languages and the schema languages offer a bond that connects between the two for making a document well and good in every possible manner. The tools that are lacking in XML are used by XSD for designing and application.

XML is known for its simplicity whereas XSD offers complex tools that are also compatible with the XML document for its designs and ease of presentation.


  1. https://ieeexplore.ieee.org/abstract/document/994698/
  2. https://dl.gi.de/handle/20.500.12116/24882
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