XML Schema Evolution and Versioning

2010 ◽  
pp. 66-87 ◽  
Author(s):  
Giovanna Guerrini ◽  
Marco Mesiti
Keyword(s):  
Structural Changes ◽  
Xml Schema ◽  
Research Community ◽  
Schema Evolution ◽  
Xml Documents ◽  
Xml Document ◽  
Document Structures ◽  
The Web

The large dynamicity of XML documents on the Web has created the need to adequately support structural changes and to account for the possibility of evolving and versioning the schemas describing XML document structures. This chapter discusses and compares the support for schema evolution and versioning provided by commercial systems as well as the most relevant approaches and prototypes proposed and developed by the research community.

An Algorithm for Transforming XML Documents Schema into Relational Database Schema

2011 ◽  
pp. 171-189 ◽  
Author(s):  
Abad Shah ◽  
Jacob Adeniyi ◽  
Tariq Al Tuwairqi
Keyword(s):  
Relational Database ◽  
Database Schema ◽  
The Internet ◽  
Xml Documents ◽  
Simpler Algorithm ◽  
Xml Document ◽  
Database Technology ◽  
Relational Database Schema ◽  
Xml Technologies ◽  
The Web

The Web and XML have influenced all walks of lives of those who transact business over the Internet. People like to do their transactions from their homes to save time and money. For example, customers like to pay their utility bills and other banking transactions from their homes through the Internet. Most companies, including banks, maintain their records using relational database technology. But the traditional relational database technology is unable to provide all these new facilities to the customers. To make the traditional relational database technology cope with the Web and XML technologies, we need a transformation between the XML technology and the relational database technology as middleware. In this chapter, we present a new and simpler algorithm for this purpose. This algorithm transforms a schema of a XML document into a relational database schema, taking into consideration the requirement of relational database technology.

Extending XML Types Using Updates

2010 ◽  
pp. 1-21 ◽  
Author(s):  
Béatrice Bouchou ◽  
Denio Duarte ◽  
Mírian Halfeld Ferrari ◽  
Martin A. Musicante
Keyword(s):  
Web Service ◽  
Xml Schema ◽  
Experimental Results ◽  
Element Content ◽  
Network Connection ◽  
Service Evolution ◽  
Xml Document ◽  
Communication Needs ◽  
Service Protocol ◽  
The Web

The XML Messaging Protocol, a part of the Web service protocol stack, is responsible for encoding messages in a common XML format (or type), so that they can be understood at either end of a network connection. The evolution of an XML type may be required in order to reflect new communication needs, materialized by slightly different XML messages. For instance, due to a service evolution, it might be interesting to extend a type in order to allow the reception of more information, when it is available, instead of always disregarding it. The authors’ proposal consists in a conservative XML schema evolution. The framework is as follows: administrators enter updates performed on a valid XML document in order to specify new documents expected to be valid, and the system computes new types accepting both such documents and previously valid ones. Changing the type is mainly changing regular expressions that define element content models. They present the algorithm that implements this approach, its properties and experimental results.

Research of Data Exchange Model among Information Systems

2014 ◽  
Vol 608-609 ◽  
pp. 401-407
Author(s):  
Su Jin Cai
Keyword(s):  
Information Systems ◽  
Data Storage ◽  
Data Exchange ◽  
Xml Schema ◽  
Exchange Model ◽  
Relational Schema ◽  
Xml Documents ◽  
The Core ◽  
Xml Document ◽  
Information Circulation

Data exchange can make different information systems of enterprises realize data interaction. The objective establishing it is to keep information sharing and synchronization in enterprises, which can effectively use resources, improve the performance of the system and speeds up information circulation. Data exchange model is the core of realizing data exchange and it has a set of completed data storage and access mechanism. The paper verifies the mapping of relational schema and XML schema, the conversion of database and XML data, and XML document schema, and the paper constructs XSLT documents among different XML schemas, and explains and implements the algorithms of the conversion among different XML documents.

An Overviewof Similarity Measures for Clustering XML Documents

2007 ◽  
pp. 56-78 ◽  
Author(s):  
Giovanna Guerrini ◽  
Marco Mesiti ◽  
Ismael Sanz
Keyword(s):  
Similarity Measures ◽  
Content Delivery ◽  
Heterogeneous Data ◽  
Heterogeneous Data Integration ◽  
Clustering Techniques ◽  
Xml Documents ◽  
Xml Document ◽  
Definition Of ◽  
Content Similarity ◽  
The Web

The large amount and heterogeneity of XML documents on the Web require the development of clustering techniques to group together similar documents. Documents can be grouped together according to their content, their structure, and links inside and among documents. For instance, grouping together documents with similar structures has interesting applications in the context of information extraction, of heterogeneous data integration, of personalized content delivery, of access control definition, of web site structural analysis, of comparison of RNA secondary structures. Many approaches have been proposed for evaluating the structural and content similarity between tree-based and vector-based representations of XML documents. Link-based similarity approaches developed for Web data clustering have been adapted for XML documents. This chapter discusses and compares the most relevant similarity measures and their employment for XML document clustering.

An Efficient Authorization Mechanism for Secure XML Sources on the Web

2006 ◽  
Vol 10 (5) ◽  
pp. 721-727
Author(s):  
Sun-Moon Jo ◽  
◽  
Weon-Hee Yoo ◽  
Keyword(s):  
Access Control ◽  
System Performance ◽  
Information Structure ◽  
Evaluation Process ◽  
Xml Documents ◽  
Fundamental Limitations ◽  
Xml Document ◽  
Authorization Policy ◽  
Dom Tree ◽  
The Web

XML-based access control technology aims at providing an authorization policy that can be consistently applied to various products for access control services on Internet and different kinds of environment for the products and thus providing interoperability to the existing access control products with diverse kinds of environment and types. The existing access control fails to consider information structure and semantics sufficiently due to the fundamental limitations of HTML. In addition, XML document access control supplies only action read and permits alterations of very limited value for action write. The existing access control has disadvantages that DOM tree should be loaded on memory while all XML documents are parsed to generate DOM tree; that a lot of memory is used in repetitive search for tree to authorize access to all nodes in DOM tree; and that the complex authorization evaluation process may lower system performance. In this paper, we present an authorization mechanism for secure XML sources on the Web.

scholarly journals XML document-grammar comparison: related problems and applications

2011 ◽  
Vol 1 (1) ◽  
Author(s):  
Joe Tekli ◽  
Richard Chbeir ◽  
Agma Traina ◽  
Caetano Traina
Keyword(s):  
Web Services ◽  
Intrusion Detection ◽  
Data Sources ◽  
Intrusion Detection Systems ◽  
Research Issue ◽  
Detection Systems ◽  
Xml Documents ◽  
Xml Document ◽  
Xml Querying ◽  
The Web

AbstractXML document comparison is becoming an ever more popular research issue due to the increasingly abundant use of XML. Likewise, a growing interest fosters the development of XML grammar matching and comparison, due to the proliferation of heterogeneous XML data sources, particularly on the Web. Nonetheless, the process of comparing XML documents with XML grammars, i.e., XML document and grammar similarity evaluation, has not yet received the attention it deserves. In this paper, we provide an overview on existing research related to XML document/grammar comparison, presenting the background and discussing the various techniques related to the problem. We also discuss some prominent application domains, ranging over document classification and clustering, document transformation, grammar evolution, selective dissemination of XML information, XML querying, as well as alert filtering in intrusion detection systems and Web Services matching and communications.

Tree Inferior Strong MVD for XML Document

2011 ◽  
Vol 268-270 ◽  
pp. 2002-2008
Author(s):  
Li Feng Yin ◽  
Hua Jin ◽  
Hong Tian
Keyword(s):  
Incomplete Information ◽  
Xml Schema ◽  
Tree Structure ◽  
Precise Definition ◽  
Xml Documents ◽  
Xml Document ◽  
Definition Of ◽  
Data Constraints ◽  
Database Normalization

Data constraints are the basis of the database normalization, the introduction of XML documents with incomplete information, data constraints need to be re-defined. The precise definition of the tree inferior strong multi-valued dependency for XML documents(XTISMVD) was proposed, which was based on the tree structure and subtree information equivalent. Judging condition of XTISMVD was studied. By instance this paper shows that the existence of XTISMVD produces redundancies and update anomalies, moving or adding nodes for XML Schema can reduce redundancies.

TRANSLATING RELATIONAL SCHEMA WITH CONSTRAINTS INTO XML SCHEMA

2006 ◽  
Vol 16 (02) ◽  
pp. 201-243 ◽  
Author(s):  
JOSEPH FONG ◽  
ANTHONY FONG ◽  
H. K. WONG ◽  
PHILIP YU
Keyword(s):  
Relational Database ◽  
Xml Schema ◽  
Data Type ◽  
Relational Data ◽  
The Internet ◽  
Conceptual Schema ◽  
Root Element ◽  
Xml Documents ◽  
Type Definition ◽  
Xml Document

With XML adopted as the technology trend on the Internet, and with investment in the current relational database systems, companies must convert their relational data into XML documents for data transmission on the Internet. In the process, to preserve the users' relational data requirements of data constraints into the converted XML documents, we must define a meaningful root element for each XML document. The construction of an XML document is based on the root element and its relevant elements. The root element can be selected from a relational entity table in the existing relational database, which depends on the requirements to present the business behind. The relevant elements are mapped from the related entities, based on the navigability of the chosen entity. The derived root and relevant elements can form a Data Type Definition Graph (DTD-graph) of an XML conceptual schema diagram which can be mapped into a Data Type Definition (DTD) of an XML schema. The result is a translated XML schema with semantic constraints transferred from a relational conceptual schema of an Extended Entity Relationship (EER) model. The data conversion from relational data to the XML documents can be done after the schema translation. The relational data are loaded into XML documents according to the translated DTD.

Fuzzy Approaches to Clustering XML Structures

2011 ◽  
pp. 177-198
Author(s):  
Michal Kozielski
Keyword(s):  
Fuzzy Clustering ◽  
Multiple Representations ◽  
Bag Model ◽  
Document Structure ◽  
Xml Documents ◽  
Structure Level ◽  
Xml Document ◽  
Hierarchical Nature ◽  
Document Structures ◽  
Document Representations

Information on the hierarchical nature of XML data is essential in tasks of learning from XML document structures. Within this view, XML documents can be regarded as multi-represented data, which is the case when multiple representations of the document correspond to the generation of features at each structure level of the document separately. This chapter raises the importance of using fuzzy approaches to clustering XML document structures, since these approaches are shown to be effective in combining the information coming from different document representations that correspond to different hierarchy levels. For this purpose, we overview fuzzy encoding and similarity methods and present fuzzy clustering approaches which are particularly suited for being extended to handle XML document structures. We propose two different scenarios of fuzzy clustering of XML structures, which aim to either encode the document structure hierarchy using a fuzzy bag model or to specifically handle the multi-representation of the documents.

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