منابع مشابه
F2/XML: Managing XML Document Schema Evolution
XML has become an emerging standard for data representation and data exchange on the Web. Although XML data is self-describing, most application domains tend to use document schemas. Over a period of time, these schemas need to be modified to reflect a change in the real-world, a change in the user’s requirements, mistakes or missing information in the initial design. Most of the current XML ma...
متن کاملAssisting XML Schema Evolution that Preserves Validity
We consider the problem of XML schema evolution preserving the validity of existing documents related to the original schema. The aim of such schema evolution is to fit new needs without revalidating all existing valid XML documents. We propose an approach to assist users to specify schema updates that have no impact on existing document validity. An XML schema is modeled as a set of regular ex...
متن کاملRegular Expressions in Xml Schema Evolution
A data schema is a set of constructs that emulate relations between domain instances. Schema evolution is changes in the data schema and a system of data consistency support for such modifications. Axiomatic model regulates modifications and maintains data consistency by ensuring that the data schema always satisfies a set of axioms. This paper is an extension to previous work, which has define...
متن کاملA ToolBox for Conservative XML Schema Evolution and Document Adaptation
This paper proposes a set of tools to help dealing with XML database evolution. It aims at establishing a multi-system environment where a global integrated system works in harmony with some local original ones, allowing data translation in both directions and, thus, activities on both levels. To deal with schemas, we propose an algorithm that computes a mapping capable of obtaining a global sc...
متن کاملA Conceptual Model for the XML Schema Evolution
In this article the conceptual model EMX (Entity Model for XML-Schema) for dealing with the evolution of XML Schema (XSD) is introduced. The model is a simplified representation of an XSD, which hides the complexity of XSD and offers a graphical presentation. For this purpose a unique mapping is necessary which is presented as well as further information about the visualization and the logical ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: ACM Transactions on Internet Technology
سال: 2011
ISSN: 1533-5399,1557-6051
DOI: 10.1145/1993083.1993087