Xml Schema
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An XML schema defines the structure and elements of an XML document. It is an XML-based alternative to DTDs that allows defining element types, attributes, data types, defaults and restrictions. Schemas support namespaces, data types, extensibility and are written in XML, allowing the use of XML tools. Complex elements can contain child elements, text or both.
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- How XML Schema can be used to validate XML documents
- How namespaces help avoid conflicts between element names
Introduction to xml schema
XML Schema is an XML-based alternative to DTDs that defines the structure and legal elements and attributes of an XML document. An XML Schema describes elements, attributes, data types, restrictions, and more. Schemas are more powerful than DTDs and support namespaces, data types, extensibility, and validation of XML documents.
Introduction to XML
This document provides an introduction to XML, including:
1) It describes XML as a universal language for describing structured data in a platform-independent way, supported by the W3C.
2) It explains some key differences between XML and HTML, and when each should be used.
3) It discusses XML schemas like DTD and XSD that define rules for XML documents and enable validation.
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XML is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. XML documents are formed as element trees that contain nested elements and attributes. XML documents can be validated against XML schemas or DTDs to ensure they follow the defined structure and syntax. Namespaces are used in XML to avoid conflicts between elements with the same name from different sources.
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- 22. Restrictions for Datatypes Specifies the lower bounds for numeric values (the value must be greater than or equal to this value) minInclusive Specifies the lower bounds for numeric values (the value must be greater than this value) minExclusive Specifies the maximum number of characters or list items allowed. Must be equal to or greater than zero maxLength Specifies the upper bounds for numeric values (the value must be less than or equal to this value) maxInclusive Specifies the upper bounds for numeric values (the value must be less than this value) maxExclusive Specifies the exact number of characters or list items allowed. Must be equal to or greater than zero length Specifies the maximum number of decimal places allowed. Must be equal to or greater than zero fractionDigits Defines a list of acceptable values enumeration Description Constraint
- 23. Specifies how white space (line feeds, tabs, spaces, and carriage returns) is handled whiteSpace Specifies the exact number of digits allowed. Must be greater than zero totalDigits Defines the exact sequence of characters that are acceptable pattern Specifies the minimum number of characters or list items allowed. Must be equal to or greater than zero minLength
- 38. THANK YOU