| Allen Brown, Matthew Fuchs, Jonathan Robie, and Philip Wadler. MSL: A model for W3C XML Schema. In Proc. WWW10, May 2001. |
....been lying fallow until now and to the best of our knowledge this is the first approach that employs XML Schema information for conceptual level querying of XML. The need for a formal and intuitive abstraction of the complex XML Schema standard [XML01] has been identified and addressed in [BFRW01a,BFRW01b] Our prototypical implementation of XPathT employs such a formal abstraction called MXS (Section 2) as the basis of the conceptual querying framework. Our basic approach can also be used with other XML schema languages; see [Cov02] for a list of the many competing approaches, MLM01b] ....
.... Abstract Model for XML Schema (MXS) The extension from syntactic to conceptual queries is based on an underlying abstract Model for XML Schema (MXS) The XML Schema standard [XML01] has been criticized for its complexity, and attempts at a simpler and more formal description are underway [BFRW01b,BFRW01a] As it turns out, much of the complexity is due to intricacies of how to declare schema information and not caused by the actual underlying schema metamodel (i.e. the object oriented modeling constructs which the schema designer can use) which is rather simple and straightforward. In the ....
A. Brown, M. Fuchs, J. Robie, and P. Wadler. MSL: A model for W3C XML Schema. In WWW10, Hong Kong, 2001.
....been lying fallow until now and to the best of our knowledge this is the first approach that employs XML Schema information for conceptual level querying of XML. The need for a formal and intuitive abstraction of the complex XML Schema standard [XML01] has been identified and addressed in [BFRW01a, BFRW01b] Our prototypical implementation of XPathT employs such a formal abstraction called MXS (Section 2) as the basis of the conceptual querying framework. Our basic approach can also be used with other XML schema languages; see [Cov02] for a list of the many competing approaches, MLM01b] ....
.... Model for XML Schema (MXS) The extension from syntactic to conceptual queries is based on an underlying abstract Model for XML Schema (MXS) The XML Schema standard [XML01] has been criticized for its complexity, and attempts at a simpler and more formal description are underway [BFRW01b, BFRW01a] As it turns out, much of the complexity is due to intricacies of how to declare schema information and not caused by the actual underlying schema metamodel (i.e. the object oriented modeling constructs which the schema designer can use) which is rather simple and straightforward. In the ....
A. Brown, M. Fuchs, J. Robie, and P. Wadler. MSL: A model for W3C XML Schema. In WWW10, Hong Kong, 2001.
No context found.
Allen Brown, Matthew Fuchs, Jonathan Robie, and Philip Wadler. MSL: A model for W3C XML Schema. In Proc. WWW10, May 2001.
No context found.
Allen Brown, Matthew Fuchs, Jonathan Robie, and Philip Wadler. MSL: A model for W3C XML Schema. In Proc. WWW10, May 2001.
No context found.
A. Brown, M. Fuchs, J. Robie, and P. Wadler. MSL: A model for W3C XML schema. In WWW 10, 2001.
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A. Brown, M. Fuchs, J. Robie, and P. Wadler. MSL a model for W3C XML Schema. In Proc. of 10th World Wide Web Conf. (WWW), pages 191--200, 2001.
No context found.
A. Brown, M. Fuchs, J. Robie, and P. Wadler. MSL a model for W3C XML Schema. In Proc. of 10th World Wide Web Conference (WWW), pages 191--200, 2001.
No context found.
Allen Brown, Matthew Fuchs, Jonathan Robie, and Philip Wadler. MSL: A model for W3C XML Schema. In Proc. WWW10, May 2001.
....An agreement on the structure enables applications to navigate the data in a meaningful way. We call a collection of constraints on the structure a type. Several type formalism have been proposed for semistructured data [BDFS97, GW97, BM99] and several are considered for XML [Con98, BLM 99, BFRW84] There is an obvious analogy between types in semistructured data types in programming languages. But there is an important di erence. The former are global constraints on the data, while the latter are local constraints. For example, if a semistructured data instance is a list containing a, b ....
....the base types; they can be added easily. There has been considerable e ort at the W3C to de ne schemas for XML. The XML standard itself [Con98] de nes DTDs, Document Type De nitions. Several attempts have been made to extend DTDs, and the current ocial recommendation is XML Schema [BLM 99, BFRW84] While both DTDs and XML Schema types can be expressed as XDuce types, neither DTDs nor XML Schema can express all XDuce types. In DTDs the restriction is that, if two unit types with the same tag, q) and (q 0 ) occur in a type de nition TD, then their types identi ers must be the same, ....
A. Brown, M. Fuchs, J. Robie, and P. Wadler. MSL: a model for W3C XML Schema. In Proceedings of WWW10, Hong Kong, May 1984. 16
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A. Brown, M. Fuchs, J. Robie, and P. Wadler. MSL a model for W3C XML Schema. In Proc. of 10th Int. World Wide Web Conference (WWW), pages 191--200, 2001.
No context found.
A. Brown, M. Fuchs, J. Robie, and P. Wadler. MSL a model for W3C XML Schema. In Proceedings of 10th World Wide Web Conference (WWW), pages 191--200, 2001.
No context found.
Allen Brown, Matthew Fuchs, Jonathan Robie, and Philip Wadler. MSL: A model for W3C XML Schema. In Proc. WWW10, May 2001.
No context found.
A.Brown, M.Fuchs, J. Robie, and P. Wadler. MSL: A model for W3C XML Schema. In Proc. of WWW10, 2001.
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A. Brown, M. Fuchs, J. Robie, and P. Wadler. MSL - a model for W3C XML schema. In World Wide Web, pages 191--200, 2001.
No context found.
Allen Brown, Matthew Fuchs, Jonathan Robie, and Philip Wadler. MSL: A model for W3C XML Schema. In Proc. WWW10, May 2001.
No context found.
Allen Brown, Matthew Fuchs, Jonathan Robie, and Philip Wadler. MSL --- a model for W3C XML schema. In Proceedings of the Tenth International World Wide Web Conference, Hong Kong, China, May 1-5, 2001, volume 10, 2001.
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