XML Schema is an XML-based alternative to DTD.An XML schema describes the structure of an XML document.The XML Schema language is also referred to as XML Schema Definition (XSD).An XML schema is a description of a type of XML document, typically expressed in terms of constraints on the structure and content of documents of that type, above and beyond the basic syntactical constraints imposed by XML itself.
xml is a markup language with a fairly simple structure. you use <xml> to strat an xml file and use </xml> to denote the end of the fiel. Within the file, you can use any tags you like, you can have attributes, elements and child elements.
The building blocks of DTD (Document Type Definition) include elements, attributes, entities, and notations. Elements define the structure of an XML document, attributes provide additional information about elements, entities allow for reusable content, and notations define the format of non-XML data within the document.
xsd stands for xml schema definition, it specifies how to formally describe the elements in an Extensible Markup Language (XML) document. This description can be used to verify that each item of content in a document adheres to the description of the element in which the content is to be placed.
Oh, dude, an XML document has elements, attributes, and text. Elements are like the main characters in a story, attributes are the sidekicks with extra info, and text is like the dialogue that ties it all together. So, like, that's the basic rundown of what makes up an XML document.
an xml schema is a blueprint for your xml file and it dictates what can and cannot be in your xml file. it also is a blueprint as i said and so it outlines the tsructure of your file, the nodes, elements, child, attributes etc
A DTD is the original type of XML schema. XML Schemas are used to formally describes the contents of an XML document. An XML schema describes the shape of the XML document, defining the data, sub elements or attributes it can contain, along with the number of times given entities can occur. A document type definition (DTD) is a set of markup declarations that define a document type for an SGML-family markup language (SGML, XML, HTML). A Document Type Definition (DTD) defines the legal building blocks of an XML document. It defines the document structure with a list of legal elements and attributes.
Well-formed XML means that the XML is correct (it has only one root node, and all elements match an end element tag)Valid XML means that the XML can be validated to an XML Schema or DTD, and that all the tags in the XML are also in the Schema or DTD, and in the right place.
XML entities allow you to use text to refer to a data item, instead of using the data item itself. There are 5 predefined entity references in XML. These are:Entity ReferenceCharacter&lt;<&gt;>&amp;&&quot;"&apos;'
A PDP file is a XSD(Xml schema definition) format file.
That depends on what you want to do, xml tools include; xml parsers xml validators xml editors xml schema editors xml code generators
there is no source code, xml is not a programming language, its a markup language for which you create your own tags, the basic xml syntax is <xml> to start an xml file, and </xml> to end the xml file.