XML Namespaces Last Updated : 24 Apr, 2024 Summarize Comments Improve Suggest changes Share Like Article Like Report XML namespaces prevent naming conflicts between elements and attributes in XML documents, especially when various XML vocabularies are joined or elements with the same name come from different sources. Table of Content Default Namespace DeclarationPrefixed Namespace DeclarationDefault Namespace DeclarationDefault Namespace Declaration in XML namespaces assigns a default namespace to all unprefixed components inside a given scope. This signifies that elements without a prefix are presumed from the given namespace. The "xmlns" element is used to declare the default namespace. Syntax:<root xmlns="http://example.com/ns"> <child>Content</child></root>Example: To demonstrate the XML library catalog file structure in XML. XML <?xml version="1.0" encoding="UTF-8"?> <library xmlns="http://example.com/library"> <book> <title>XML Basics</title> <author>John Doe</author> </book> <book> <title>Advanced XML</title> <author>Jane Smith</author> </book> </library> Output: Prefixed Namespace DeclarationIn XML namespaces, the Prefixed Namespace Declaration method assigns a prefix to a namespace URI. This allows elements and attributes from that namespace to be identified with the specified prefix. Prefixed namespaces are especially beneficial when items from different namespaces appear in the same XML document. Syntax:<root xmlns:prefix="http://example.com/ns"> <prefix:child>Content</prefix:child></root>Example: To demonsrtate the books catalog file structure in XML. XML <?xml version="1.0" encoding="UTF-8"?> <catalog xmlns:bk="http://example.com/books" xmlns:auth="http://example.com/authors"> <bk:book> <bk:title>XML Basics</bk:title> <auth:author>John Doe</auth:author> </bk:book> <bk:book> <bk:title>Advanced XML</bk:title> <auth:author>Jane Smith</auth:author> </bk:book> </catalog> Output: Comment More infoAdvertise with us Next Article XML | Attributes P parthdollor Follow Improve Article Tags : JavaScript Web Technologies Web technologies-HTML and XML Similar Reads XML Namespaces in Android In an XML file, namespaces are used to provide elements and attributes with distinctive names. Names for elements or attributes in an XML instance may come from different XML vocabularies. The ambiguity between similar elements or attributes can be eliminated if each vocabulary is given its own name 2 min read XML | Attributes Prerequisite: XML | BasicsThe XML attribute is a part of an XML element. The addition of attribute in XML element gives more precise properties of the element i.e, it enhances the properties of the XML element.Syntax:Â Â <element_name attribute1 attribute2 ... > Contents... </element_name 3 min read XML | Attributes Prerequisite: XML | BasicsThe XML attribute is a part of an XML element. The addition of attribute in XML element gives more precise properties of the element i.e, it enhances the properties of the XML element.Syntax:Â Â <element_name attribute1 attribute2 ... > Contents... </element_name 3 min read Apache XMLBeans using Java XMLBeans is a tool developed by Apache Software Foundation that allows users to access and manipulate XML data using the Java programming language. The tool provides an easy-to-use, object-oriented approach to working with XML, making it a popular choice among Java developers. XMLBeans uses the XML 3 min read PHP | XMLReader lookupNamespace() Function The XMLReader::lookupNamespace() function is an inbuilt function in PHP which is used to lookup in scope namespace for a given prefix. Syntax: string XMLReader::lookupNamespace( string $prefix ) Parameters: This function accepts a single parameter $prefix which holds the string containing the prefix 1 min read PHP | SimpleXMLElement getNamespaces() Function Pre-requisite: Read XML basics The SimpleXMLElement::getNamespaces() function is an inbuilt function in PHP which is used to retrieve the namespaces declared in XML document. Syntax: array SimpleXMLElement::getNamespaces( $recursive ) Parameter: This function accepts single parameter $recursive whic 2 min read Like