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An important facility to aid keyword search on XML data is suggesting alternative queries when user queries contain typographical errors. Query suggestion thus can improve users' search experience by avoiding returning empty result or results of poor qualities. In this paper, we study the problem of effectively and efficiently providing quality query suggestions for keyword queries on an XML document...
In modern enterprises, each enterprise's data content and data structures are very different. With the development of enterprises, their business models and data models are constantly changing. The dynamic data modeling tool which was discussed in this paper is mainly to solve the dynamic of business needs. The tool includes data modeling tool and page layout tool. Data modeling tools which serialized...
Nowadays XML have reached a great interest, because it is possible to share information through the Web. Moreover, the Web can be conceived as a huge Database. Therefore, like DBMS traditional, the Web needs efficient algorithms to detect changes on the Database. In this paper we present an efficient algorithm to detect change in XML documents. Algorithm efficiency resides in the efficient application...
As the next generation of the Web language, XML is straightforwardly usable, which has been the de-facto standard of information representation and exchange over the Web. XML employs a tree-structured data model, and XML queries specify patterns of selection predicates on multiple elements related by a tree structure. Due to increase in web-based applications, searching for all occurrences of a twig...
For the heterogeneous database management system, the common method is used the XML document as the virtual Intermediary when realizing the information sharing. The disadvantage of this method is that the data is limited, the details of the implementation is complicated, and the information security is too low. By researching the Caché database technology, designed a new database management system...
The need for interoperation and data exchange through the Internet has made Extensible Markup Language (XML) a dominant standard for data representation, while relational databases are widely used in enterprises to support critical business operations. XML querying language (XUpdate) is used to modify XML documents where as structured query language (SQL) for retrieving and manipulating data in relational...
In order to deal with IETM (Interactive Electronic Technical Manual) data better, XML is used to develop IETM and discuss the IETM data processing. The use of XML document for storaging manual data to DTD(Document Type Definition) defines XML documentation tags. At the same time, the use of XML in the XSL style sheet released IETM data to meet the standard browser display.
This paper proposed new model for data retrieval. This technique will improve time for data retrieval. Document Object Method (DOM) will used as key to read XML document. This model will created cache as a temporary file. After retrieve data from database, the data will saved at cache. This model is very efficient compared to old model. Experimental result shows this model produce better performance...
Normalization theory is necessary for designing a good XML document. A good document means that it has minimal redundancy. The research on XML functional dependency and normalization is still an open problem. This paper first presents a path language of XML model, then proposes a new kind of XML functional dependency (XFD) that has stronger expression ability to XML functional dependency that can...
The Web has become one of the most important connections to various information resources. The most interesting challenge is how to extract important data from a large number of Web pages and transform them to more structural, standard and semantic information, which can be queried and analyzed by using matured techniques in database, data warehouse and other fields. We design a wrapper generator...
As the information grows exponentially, it has become a new and basic requirement to reduce the querying area efficiently and accurately for information querying. This paper proposes a semantic distance based clustering algorithm for XML documents. It discusses the algorithm in two steps. Firstly, it forms some DTD clusters with all heterogeneous DTD documents by using the global semantic dictionary...
Inspired by the great success of information retrieval (IR) style keyword search on the Web, keyword search on XML has emerged recently. The difference between text database and XML database results in three new challenges: (1) Identify the user search intention, i.e. identify the XML node types that user wants to search for and search via. (2) Resolve keyword ambiguity problems: a keyword can appear...
It is important to define suitable indexes when optimizing a database. Usually, index is defined in the design phase of the database, and there is no guarantee for these indexes to match the future demands, especially in XML database. A new way to optimize index automatically based on the characteristic of XML document, combined with the ISP principium automaticity optimization KeyX index has been...
The XPath language is based on a tree representation of the XML document, and provides the ability to navigate around the tree, selecting nodes by a variety of criteria. Here an optimization plan is proposed, to unnest and optimize nested XPath query for XML Inter and Intra document relationship. Inter and Intra document relationships are techniques of implementing one to many relationship. We propose...
The World Wide Web has become a huge repository of data of interest for a variety of application domains. However, the same features that have made the Web so useful and popular also impose important restrictions on the way the data it contains can be manipulated. Particularly, in the traditional Web scenario, there is an inherent difficulty in gaining access to data that is implicitly present in...
XML has become an important format for exchange data. Ranking of XML search results directly relates to XML information retrieval performance. Most of the existing ranking models consider words statistical characteristics in the XML document, but they do not consider position of the node a word belongs to. That is to say, all of nodes in XML document have the equal importance. However, different node...
XML is a commonly used and popular representation format and there is an increasing need for efficient storage and retrieval of XML. Available technology for storage and management of XML includes native XML storage and shredding of XML into relational databases. Evaluations show that there is no easy answer on which solution is most efficient and that the storage needs to be customized depending...
Aimed at the puzzle to realize exchange and integration for heterogeneous data, this paper proposed a sort of data exchange model of heterogeneous database based on middleware unified platform. Based on the mapping of model drive, the data exchange could be realized by a concrete model. Its thought was to express XML document being a tree composed by data object, in which each element type corresponded...
This paper proposes information exchange model based on the XML technology, establishes the exchange of information integration platform under the Internet / Intranet environment by taking advantage of XML document as the carrier of low level information exchange, and also develops the corresponding software components, providing with an efficient means to realize the integration of information between...
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