In accession to getting well-formed, an XML certificate may be valid. This agency that it contains a advertence to a Certificate Type Definition (DTD), and that its elements and attributes are declared in that DTD and chase the grammatical rules for them that the DTD specifies.
XML processors are classified as acceptance or non-validating depending on whether or not they analysis XML abstracts for validity. A processor that discovers a authority absurdity have to be able to address it, but may abide accustomed processing.
A DTD is an archetype of a action or grammar. Since the antecedent advertisement of XML 1.0, there has been abundant plan in the breadth of action languages for XML. Such action languages about constrain the set of elements that may be acclimated in a document, which attributes may be activated to them, the adjustment in which they may appear, and the acceptable parent/child relationships.
XML processors are classified as acceptance or non-validating depending on whether or not they analysis XML abstracts for validity. A processor that discovers a authority absurdity have to be able to address it, but may abide accustomed processing.
A DTD is an archetype of a action or grammar. Since the antecedent advertisement of XML 1.0, there has been abundant plan in the breadth of action languages for XML. Such action languages about constrain the set of elements that may be acclimated in a document, which attributes may be activated to them, the adjustment in which they may appear, and the acceptable parent/child relationships.
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