A wishlist of desired tools is also being maintained.See also the Semantic Web open source tool site Sem Web This will help you to get the basic concepts in parsing and how does DOM API differ from SAX.6.1.1 Using DOM parses a XML file and prints it on the console . This is a two stage process, first it parses the XML file and creates a tree structure in the memory.The mechanism for associating an XML document with a schema varies according to the schema language.The association may be achieved via markup within the XML document itself, or via some external means.
In the code example that follows, a schema-validating Xml Reader validates the XML data loaded into the DOM. Schema Class Xml Document Validation Example Shared Sub Main() Try ' Create a schema validating Xml Reader. Validation Event Handler, New Validation Event Handler(Address Of Validation Event Handler) settings. Select Single Node("/bk:bookstore/bk:book/bk:price", manager) Console.
After successful validation, schema defaults are applied, text values are converted to atomic values as necessary, and type information is associated with validated information items. Dim document As Xml Document = New Xml Document() document.
As a result, typed XML data replaces previously untyped XML data. Load(reader) ' Make an invalid change to the first and last ' price elements in the XML document, and write ' the Xml Schema Info values assigned to the price ' element during load validation to the console.
The process of checking to see if a XML document conforms to a schema is called validation, which is separate from XML's core concept of syntactic well-formedness.
All XML documents must be well-formed, but it is not required that a document be valid unless the XML parser is "validating", in which case the document is also checked for conformance with its associated schema.