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We describe here an agent-based Distributed Analytical Search (DAS) tool to search and query distributed “big data” sources regardless of data's location, content or format. DAS semantically analyzes natural language queries from a web-based user interface. It automatically translates the query to a set of sub-queries by deploying a combination of planning and traditional database query optimization...
Electronic Health Record (EHR) Systems are widely considered a crucial tool for the excellence in patient care, especially in the context of chronic diseases. Nevertheless, patients often do not have full control on their clinical data, which are generated by different health centers. Moreover, collecting, storing and providing clinical data are intensive tasks for health structures, which frequently...
With the growing of the Internet, lots of heterogeneous relational databases are built in distributed environment. Data exchange between these databases absorbs more attention of researchers and engineers nowadays than ever. As a well-formed makeup language, XML is suitable to store and transfer information. Therefore we investigate the data exchange method via XML in this paper. We analyze mapping...
Currently, data integration in Ubiquitous Information Systems (UISs) is achieved by a centralized relational database where all the information coming from the remote servers is stored. To improve such architecture we proposed to convert in each server the relational archives into an RDF triple stores where data are represented by standard terms interrelated by subject-predicate-object relations (also...
There are many difficulties in data exchanging and sharing among health and medical information systems. This paper introduces some key techniques of the solution, which include the adoption of P2P communication mode, the framework for heterogeneous data integrating and semi-structured data mapping. These techniques employ distributed data storage and XML technology, which makes the system low in...
Access, MySQL, SQL Server and Oracle9i databases are studyed in this paper. Aiming at the characteristics of data types in heterogeneous database, simple but flexible data types matching method is proposed. In the environment of C#.Net, using standard SQL language and binary text file as intermediate data file, heterogeneous database import-and-export system is developped, which is relatively independent...
To solve the interoperability is sure between mobile agent and struts 2, Combining the advantages of both, a new Aglet-struts 2 integrated development framework based on MVC is proposed. This framework integrates mobile agent with struts 2 control action, JSP view and java Bean model in together by the aglet action service proxy, and achieves transparent access to database by persistent layer Hiberanate...
Relevant data for decision support systems are available everywhere and in various formats. Such data must be integrated into a unified format. Traditional data integration approaches are not adapted to handle complex data. Thus, we exploit the Active XML language for integrating complex data. Its XML part allows to unify, model and store complex data. Moreover, its services part tackles the distributed...
The design scheme and key technologies of remote tax declaration system (RTDS) is proposed in this paper. Especially, it is presented that how to apply XML to deal with heterogeneous data source, how to make use of the PKI and DES algorithms to improve the efficiency of encryption, and how to solve the concurrency of clients in RTDS by using Java threads. Finally, the experiment results are shown...
In this paper, we propose a profile management system to provide personalized service by managing adapted content for both user and device. To provide differentiated adapted content for each user, we identified the interaction between user and device. The content provides information for personalized service by managing original content and adapted content. In the future, the users who are using services...
The execution of complex processes defined as workflows in the Grid environment is often exposed to failures. The problems that can appear and that will lead to an execution failure are system heterogeneity, overloaded resources such as ones at the WMS level, inaccessible services or components, and as well communication links among Grid nodes. Workflow management and execution systems must be able...
Data sharing and distribution are critically significant in international astronomical research cooperation. In this study, based on scientific workflow technique, we further presented a batch data sharing system to solve the issue of batch data retrieval and sharing. The architecture and the implementation of the sharing system are presented in detail in this paper. The system fully takes advantage...
At present, different technologies were used to handle heterogeneous database in system development. It's easy for the application developers to access single database, however, the technology and code complexity make a big challenge to handle data of systems which obtain multiple data sources, no matter what the application patterns base on C/S B/S or the mixture of both. This paper offers a perspective...
This paper focuses on information retrieval from relational databases on biodiversity content of flora and fauna in Malaysia. The retrieval process was done considering factors such as the databases are distributed, located in Windows as well as Linux platforms, developed using a variety of Database Management Systems and the structure of the tables are not standardized. Structured Query Language...
A standards-based, open-source middleware system was designed and implemented to facilitate the analysis of large and disparate datasets. This system makes it possible to access several different types of database servers simultaneously, browse remote data, combine datasets, and join tables from remote databases independent of vendor. The system uses an algorithm known as Dynamic Merge Cache to handle...
For Web GIS unable to achieve interoperability among heterogeneous, spatial data and cross-platform operation, It implements reading and writing GIS data of cross-platform, distribution and interoperability through applying Web Services Technology, which improves reading and writing speed of GIS data and the speed of data transmission in networks. It puts emphasis on studying GIS Data Services, discusses...
Networked resources are of increasing complexity and have to be configured properly to guarantee their operation. Within the IETF, current efforts are focused on both a protocol and a data model definition language for configuration management. The NETCONF protocol describes the communication between devices to be configured and configuration applications. NETCONF does not describe how configuration...
Sensor networks locally form the variety sensor network as base for diverse sensors. Pre-existing development of sensor network has the problem about the processing in accordance with unit and representation of method because it does not have the common data format. Also, it has the difficult to share the data with different sensor networks. Development of middleware that can share the diverse raw...
Aiming at using different types of heterogeneous database system for enterprises and institutions, we design and implement a global data management and query processing in heterogeneous database information processing system in Intranet, The system adopts structs techniques of MVC pattern, and use Java component technology in enterprise Java Bean component technology to implement the MVC pattern in...
Ancient documents represent a primary source for research in the humanities. A substantial body of digital material has evolved containing information about these documents. Unfortunately these digital resources are often held within myriad locations, owned by a range of groups or individuals, are held within a diverse range of formats and are either unavailable or are available only in isolation...
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