Validating xml against xsd in c Reallifecam live
This means which elements can reside in which other elements, which attributes are and are not legal to have on a particular element, and so forth.A schema is analogous to a grammar for a language; a schema defines what the vocabulary for the language may be and what a valid "sentence" is.XML schema is supported in a similar way, but requires an explicit schema to be provided: As described above, the parser support for DTDs depends on internal or external subsets of the XML file.
Two more expressive XML schema languages in widespread use are XML Schema (with a capital S) and RELAX NG.
If you want to validate an XML document against a DTD that is not referenced by the document itself, you can use the keyword argument to parse from a file.
This also enables correct handling of include files from within the Relax NG parser.
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.