Developing Efficient Web-Based Xml Tool

The “XML TOOL” is used to design and develop the efficient web based application. The main objective of this application is to design and develop web based software for creation of XML, DTD, Schema and Validation of XML against a DTD or Schema, thereby reducing the discrepancies of the existing manual system which is quite inefficient and time consuming. The user can create XML by giving the name of the file, the names of the tags, description of tags, its sub tags, the attributes and the various other values. The user can create DTD and XSD by providing values for the tag names, the sub tags names, the attribute names and the various rules associated with it. The XML, DTD and XSD files are created automatically based on the values provided by the user. The user can check if the XML is well formed or not. The user can manually edit the XML, DTD or XSD that is auto created. The user can validate the XML against either a DTD or an XSD. If the XML is valid then a success message is be displayed in green color. If the XML is either not well formed or not valid, then the associated errors are displayed in red color

XML schema validation using parsing expression grammars

Schema validation is an integral part of reliable information exchange on the Web. However, implementing an efficient schema validation tool is not easy. We highlight the use of parsing expression grammars (PEGs), a recognition-based foundation for describing syntax, and apply it to the XML/DTD validation. This paper shows that structural schema constraints in document type definitions (DTDs) can be validated by the converted PEGs with the linear time and constant space consumption. We study the performance of several existing PEG-based tools, and then confirm that the converted PEGs achieve a practical and even competitive level of performance under existing standard XML/DTD validators.

XML schema validation using parsing expression grammars

Schema validation is an integral part of reliable information exchange on the Web. However, implementing an efficient schema validation tool is not easy. We highlight the use of parsing expression grammars (PEGs), a recognition-based foundation for describing syntax, and apply it to the XML/DTD validation. This paper shows that structural schema constraints in document type definitions (DTDs) can be validated by the converted PEGs with the linear time and constant space consumption. We study the performance of several existing PEG-based tools, and then confirm that the converted PEGs achieve a practical and even competitive level of performance under existing standard XML/DTD validators.

Diagramming XML

The growth in popularity of “Big Data” has brought an increased interest in visualization; that is, in software that draws graphical representations of data in the hope that a human observer can spot emergent patterns. Visualization takes data and shows a usually incomplete view. People working with XML documents may have large amounts of data to visualize, in which case some of these techniques can be very effective. People may also wish to explore constraints on the XML documents, such as those typically expressed in an XML DTD or schema. This paper will focus primarily not on data visualization of trends but on explicit visual representation of relationships: that is diagrams that illustrate a DTD schema, an XML instance, a universe of possible instances, and relationships between these things. Techniques used will focus on producing diagrams intended for use in Web browsers using libraries such as D3.js. An underlying motivation for this work is to explore affordances peculiar to XML documents: to ask, what makes XML special, or, what would need to be reinvented if one were to abandon XML for other systems.

A Survey of Common Technology and Data Model Standard of Equipment IETM

Introduced the background of equipment Interactive Electronic Technical Manual (IETM), discussed the key standard common technology XML DTD/Schema, graphic interaction, etc. Form IETM common technology aspect, analyzed the main Characteristic, implementation scope, and advantage/disadvantage, and proposed the suggestion of technology selection. Analysis the different data model standard in the development process of IETM, put forward the basic principle of IETM standard selection, provided a useful reference of IETM project implementation.

Scheme of Mapping from XML Document to Relational Database

A new algorithm and a mapping scheme between XML document and relational database were presented. The scheme extracted name, type, value and other information from XML document, and then mapped them to relational database. Data from relational database can be restored to XML document. This method avoids information loss in the data transfer process and remains the structural relation between elements. And this mapping scheme does not depend on XML DTD or Schema.