XML Schemas define the structure and data types of an XML document. They are themselves represented as an XML document. Proper understanding of an XML document requires understanding the XML Schema that defines the XML document. XML Schemas are quite complicated with features such as extending, restricting, importing, including and even redefining. Even though many of the XML Schemas are meant for functional users so that they can design new systems or map existing systems to be standards compliant, their complexity makes it difficult for these users to study them. Even many software developers have difficulty understanding the XML Schemas due to their complexity. Visual Schema addresses this problem by presenting the XML Schemas as familiar and easily navigable html forms, typically found in enterprise business applications (ERP/CRM), that help the users easily understand the structure of an XML document. See Visual Schema for XML Schema help for more details of the visual presentation of the schemas.

Academic research to make XML Schemas easier to understand is found at Visual XML Schemas Based on Reserved Graph Grammars and XML Schema Compact Syntax which also lists a paper on Making XML Schema Easier To Read And Write.

Below is a list of XML Schemas. Browse their Visual Schema representation to study and comprehend them.

Open Standards	E-Government	Popular Web Services
B2MML (WBF) EDGAR GDSN (GS1) HR-XML MIGS (Genome) NEWS ML OAGIS™ opentravel papiNet PBCore PIDX	OMB (US) EML	Amazon Web Services AAWS Amazon FWS Amazon EC2 Amazon FPS Amazon SimpleDB Amazon S3 eBay eBay Shopping eBay Trading PayPal
Documents	Office 2003
Technology	Java EE

If you would like to propose the XML Schemas of any open standard or a popular public web services available as Visual Schemas, please email the details to info @ visualschema dot com. Making your xml standards available as Visual Schemas help faster, accurate and wider adoption due to better understanding by developers, business analysts, consultants and system integrators.

• Fixed IT Asset Tracking
• Point of Sale Software (EPOS)