Showing papers on "XML published in 1970"

Integrating XML with Relational Databases using Middleware Approach

Abstract: Over the past few years, XML has become the undisputable lingua franca standard both for semi-structured data representation and exchange format over the Internet, and also content management in various e-business worlds, especially the B2B and B2C enterprise applications. However, most of these organisations still rely heavily on existing relational database management systems (RDBMS) to store and manage their structured data for daily critical business transactions. In fact, major database vendors, which also happen to be the giant software companies like Microsoft, IBM and Oracle, have ventured and taken great initiatives in researching and providing for a single solution to integrate these semi-structured XML data with structured data in relational databases. Most importantly, it is estimated that during the next few years to come, more than 75% of e-business applications will implement XML technologies in their applications. Consequently, as more software applications are rapidly beginning to implement XML, there should be a growing need for XML middleware to efficiently integrating XML data at the front-end with a RDBMS at the back-end. Hence, this research is aimed at providing a generic XML-based framework, which is known as JXDB, that allows a user to use XML for dealing with semi-structured data for creating, accessing or updating to existing heterogeneous relational databases that store structured data and vice versa. JXDB is designed to provide a generic and extensive XML middleware framework for integration between XML documents and heterogeneous relational databases.

Defining Functional Dependency for XML

Abstract: In relational model, functional dependency is a very well established concept. It is the technique used to enforce data integrity by specifying the constraints that may exist in the relations and in discovering redundancies during database design. XML as a new technology in data management need a similar technique to achieve data integrity in its environment. As the number of applications using native XML documents is increasing rapidly, there exist great interests in how to extend this concept in XML environment. However generalizing relational constraints to XML constraints is nontrivial because of the hierarchical and flexible structure of XML compared with flat representation of relational table. In this paper we propose a formal definition of functional dependency for XML that can specify constraints in hierarchical nested structure of XML. The advantage of this definition compared with the existing definitions is that, it’s able to specify constraints that hold not only in the entire document (globally) but also can scope within the sub-document (locally).

Navigating Unmountable Media with the Digital Forensics XML File System.

Abstract: Some computer storage is non-navigable by current general-purpose computers. This could be because of obsolete interface software, or a more specialized storage system lacking widespread support. These storage systems may contain artifacts of great cultural, historical, or technical significance, but implementing compatible interfaces may be beyond available resources. We developed the DFXML File System (DFXMLFS) to enable navigation of arbitrary storage systems that fulfill a minimum feature set of the POSIX file system standard. Our approach advocates for a two-step workflow that separates parsing the storage's file system structures from navigating the storage like a contemporary file system, including file contents. The parse extracts essential file system metadata, serializing to Digital Forensics XML for later consumption as a read-only file system.