XML Grammars

Abstract. XML documents are described by a document type definition (DTD). An XML-grammar is a formal grammar that captures the syntactic features of a DTD. We investigate properties of this family of grammars. We show that an XML-language basically has a unique XML-grammar. We give two characterizations of languages generated by XML-grammars, one is set-theoretic, the other is by a kind of saturation property. We investigate decidability problems and prove that some properties that are undecidable for general context-free languages become decidable for XML-languages.

• Type: Conference
• Year: 2000
• Where: MFCS
• Authors: Jean Berstel, Luc Boasson
• Keywords: Document Type Definition, Formal Grammar, General Context-free Languages, MFCS 2000, Theoretical Computer Science