An XML Data Model for Inverted Image Indexing

2003 ◽  
Author(s):  
Simon W. So ◽  
Clement H. C. Leung ◽  
Philip K. C. Tse
Keyword(s):  
Data Model ◽  
Image Indexing ◽  
Xml Data

Extended Tuple Constraint Type in Relational and XML Data Model

2017 ◽  
Author(s):  
Jovana Vidaković ◽  
Sonja Ristić ◽  
Slavica Kordić ◽  
Ivan Luković
Keyword(s):  
Data Model ◽  
Xml Data

scholarly journals XPath-logic and XPathLog: A logic-programming style XML data manipulation language

2004 ◽  
Vol 4 (3) ◽  
pp. 239-287 ◽  
Author(s):  
WOLFGANG MAY
Keyword(s):  
Logic Programming ◽  
Data Model ◽  
Formal Semantics ◽  
Xml Data ◽  
First Order ◽  
Answer Set Semantics ◽  
Manipulation Language ◽  
Horn Fragment ◽  
Main Language

We define XPathLog as a Datalog-style extension of XPath. XPathLog provides a clear, declarative language for querying and manipulating XML whose perspectives are especially in XML data integration. In our characterization, the formal semantics is defined wrt. an edge-labeled graph-based model, which covers the XML data model. We give a complete, logic-based characterization of XML data and the main language concept for XML, XPath. XPath-Logic extends the XPath language with variable bindings and embeds it into first-order logic. XPathLog is then the Horn fragment of XPath-Logic, providing a Datalog-style, rule-based language for querying and manipulating XML data. The model-theoretic semantics of XPath-Logic serves as the base of XPathLog as a logic-programming language, whereas also an equivalent answer-set semantics for evaluating XPathLog queries is given. In contrast to other approaches, the XPath syntax and semantics is also used for a declarative specification how the database should be updated: when used in rule heads, XPath filters are interpreted as specifications of elements and properties which should be added to the database.

scholarly journals A Formal Approach of Construction Fuzzy XML Data Model Based on OWL 2 Ontologies

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 22025-22033 ◽  
Author(s):  
Weijun Li ◽  
Li Yan ◽  
Fu Zhang ◽  
Xu Chen
Keyword(s):  
Data Model ◽  
Formal Approach ◽  
Xml Data ◽  
Model Based ◽  
Fuzzy Xml

scholarly journals Extended tuple constraint type as a complex integrity constraint type in XML data model - definition and enforcement

2018 ◽  
Vol 15 (3) ◽  
pp. 821-843
Author(s):  
Jovana Vidakovic ◽  
Sonja Ristic ◽  
Slavica Kordic ◽  
Ivan Lukovic
Keyword(s):  
Data Model ◽  
Relational Databases ◽  
Database Management System ◽  
Integrity Constraints ◽  
Relational Data ◽  
Integrity Constraint ◽  
Xml Data ◽  
Relational Data Model ◽  
Unique Constraint ◽  
Schema Languages

A database management system (DBMS) is based on a data model whose concepts are used to express a database schema. Each data model has a specific set of integrity constraint types. There are integrity constraint types, such as key constraint, unique constraint and foreign key constraint that are supported by most DBMSs. Other, more complex constraint types are difficult to express and enforce and are mostly completely disregarded by actual DBMSs. The users have to manage those using custom procedures or triggers. eXtended Markup Language (XML) has become the universal format for representing and exchanging data. Very often XML data are generated from relational databases and exported to a target application or another database. In this context, integrity constraints play the essential role in preserving the original semantics of data. Integrity constraints have been extensively studied in the relational data model. Mechanisms provided by XML schema languages rely on a simple form of constraints that is sufficient neither for expressing semantic constraints commonly found in databases nor for expressing more complex constraints induced by the business rules of the system under study. In this paper we present a classification of constraint types in relational data model, discuss possible declarative mechanisms for their specification and enforcement in the XML data model, and illustrate our approach to the definition and enforcement of complex constraint types in the XML data model on the example of extended tuple constraint type.

scholarly journals Information Model and XML Data Model for Traceroute Measurements

2008 ◽  
Author(s):  
S. Niccolini ◽  
S. Tartarelli ◽  
J. Quittek ◽  
T. Dietz ◽  
M. Swany
Keyword(s):  
Data Model ◽  
Information Model ◽  
Xml Data

Design and Establishment of Information Exchange Standard on Campus

2014 ◽  
Vol 513-517 ◽  
pp. 1294-1298 ◽  
Author(s):  
Si Si Shen ◽  
Ai Xia Ding
Keyword(s):  
Data Model ◽  
Information Exchange ◽  
Data Exchange ◽  
Current Practice ◽  
Digital Campus ◽  
Xml Data ◽  
Data Standard ◽  
Data Interchange ◽  
Standard Construction ◽  
Key Technologies

Exchanging and sharing information are the basic request for the Digital Campus. To deal with the current problems of information sharing and integration, the content and framework of the universal data interchange platform are introduced in terms of the categories of processes and the layers of information exchange. And a data interchange model was developed to elaborate the data exchange between different departments on campus. Four key technologies, such as XML data model, XML data hybrid storage, data standard construction and data import & export module are presented so as to define the implementation and exchange paths. The current practice of implement the exchange standards and future study are also discussed.

A Framework for Mining and Querying Summarized XML Data through Tree-Based Association Rules

2011 ◽  
pp. 264-287
Author(s):  
Mirjana Mazuran ◽  
Elisa Quintarelli ◽  
Angelo Rauseo ◽  
Letizia Tanca
Keyword(s):  
Association Rules ◽  
Data Model ◽  
A Priori ◽  
Xml Data ◽  
Approximate Answers ◽  
Eu Project

In this work we describe the TreeRuler tool, which makes it possible for inexperienced users to access huge XML (or relational) datasets. TreeRuler encompasses two main features: (1) it mines all the frequent association rules from input documents without any a-priori specification of the desired results, and (2) it provides quick, summarized, thus often approximate answers to user’s queries, by using the previously mined knowledge. TreeRuler has been developed in the scenario of the Odyssey EU project dealing with information about crimes, both for the relational and XML data model. In this chapter we mainly focus on the objectives, strategies, and difficulties encountered in the XML context.

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