An important application of XML is the interchange of electronic data (EDI) between multiple data sources on the Web. As XML data proliferates on the Web, applications will need to integrate and aggregate data from multiple source and clean and transform data to facilitate exchange. Data extraction, conversion, transformation, and integration are all well-understood database problems, and their...

Database query languages are commonly used as a tool to retrieve data of interest from databases. Although some query languages provide basic functions useful for statistical data analysis and others contain spatial query capabilities, there is as yet no query language which satisfies even basic requirements of spatial analysis. By including a set of fundamental spatial operators into the query...

Defining and processing flexible queries is an important research topic in database area. We may distinguish two ways to support flexible querying in databases: (i) developing interface systems that allow queries in pseudo-natural language, or (ii) developing an extended SQL-like languages. In this paper, we have adopted this second approach. The objective of this paper is to introduce a concep...

In this paper we propose a new way of using language models in query classification for question answering systems. We used a Bayes classifier as classification paradigm. Experimental results show that our approach outperforms current classification methods like Naive Bayes and SVM.

The purpose of this document is two-fold. First, it describes a new, conceptually simplified, interface to facilitate database management. Then, it explores that application’s architecture, implementation, criteria for evaluation, and future items for considera-

Many applications in Object Databases (ODB), for example , schema management tools, CASE tools, database development tools and integration wrappers, need extensive queries over both application data as well as metadata. However queries over metadata via OQL, a de-facto standard for object query languages deened for the ODMG 2.0 Object Model, are tied to low-level implementation details of the u...

Writing recursive queries for a database is currently a complicated task. The query requires the user to write complex and redundant SQL syntax. Also if the database being used as a backend is not compliant with SQL:1999 then it is not possible to write any recursive queries. In this paper, we present Structured Query Language with Recursion (SQLR), a data retrieval language used for writing re...

Applications require access to multiple information sources and the data of other applications. WSDL-based web services are becoming a popular way of making information sources available on the web and, hence, to applications that need to consume them – often via data integration systems that combine the data of multiple sources. We argue that the function signature paradigm that is used today ...

This paper proposes a graph data model that can represent information present in Biochemical Networks. The study presented in this paper also proposes a query language, called bcnQL, which empowers users to query entities, interactions, processes and pathways with arbitrary conditions. We then discuss the query-processing techniques, more specifically, the translation of bcnQL queries into G-al...