scholarly journals Extending Binary Large Object Support to Open Grid Services Architecture-Data Access and Integration Middleware Client Toolkit

2011 ◽  
Vol 7 (6) ◽  
pp. 832-835
Author(s):  
Patnaik
Keyword(s):  
Data Access ◽  
Grid Services ◽  
Large Object ◽  
Open Grid Services Architecture

Integrating distributed data sources with OGSA–DAI DQP and V iews

2010 ◽  
Vol 368 (1926) ◽  
pp. 4133-4145 ◽  
Author(s):  
Bartosz Dobrzelecki ◽  
Amrey Krause ◽  
Alastair C. Hume ◽  
Alistair Grant ◽  
Mario Antonioletti ◽  
...  
Keyword(s):  
Data Integration ◽  
Query Processing ◽  
Data Access ◽  
Data Sources ◽  
Distributed Data ◽  
Grid Services ◽  
Distributed Query Processing ◽  
Processing Resource ◽  
Distributed Query ◽  
Open Grid Services Architecture

OGSA-DAI (Open Grid Services Architecture Data Access and Integration) is a framework for building distributed data access and integration systems. Until recently, it lacked the built-in functionality that would allow easy creation of federations of distributed data sources. The latest release of the OGSA-DAI framework introduced the OGSA-DAI DQP (Distributed Query Processing) resource. The new resource encapsulates a distributed query processor, that is able to orchestrate distributed data sources when answering declarative user queries. The query processor has many extensibility points, making it easy to customize. We have also introduced a new OGSA-DAI V iews resource that provides a flexible method for defining views over relational data. The interoperability of the two new resources, together with the flexibility of the OGSA-DAI framework, allows the building of highly customized data integration solutions.

Semantic-Based Access Control for Data Resources in Open Grid Services Architecture

2014 ◽  
Vol 6 (2) ◽  
pp. 1-23 ◽  
Author(s):  
Vineela Muppavarapu ◽  
Soon M. Chung
Keyword(s):  
Control System ◽  
Access Control ◽  
Data Access ◽  
Grid Services ◽  
Control Policies ◽  
Ontology Language ◽  
Access Control Policies ◽  
Access Control System ◽  
Identity Based ◽  
Open Grid Services Architecture

This paper proposes a semantic-based access control system for the data resources in the Open Grid Services Architecture - Data Access and Integration (OGSA-DAI). OGSA-DAI is a widely used middleware for integrating data resources in Grids. However, the identity-based access control in OGSA-DAI causes substantial overhead for the resource providers in virtual organizations (VOs), because the access control information of individual users has to be maintained by each resource provider. To solve these problems, the authors propose a semantic-based access control system using Shibboleth and ontology. Shibboleth, an attribute authorization service, is used to manage the user attributes, and the Web Ontology Language (OWL) is used to represent the ontology of the data resources and users. By using ontology, VOs can resolve the differences in their terminologies and specify access control policies based on concepts and user roles, instead of individual resources and user identities. As a result, the administration overhead of the resource providers is reduced considerably. In addition, the eXtensible Access Control Markup Language (XACML) is used to specify the access control policies uniformly across multiple VOs. The authors also developed an XACML policy administration tool that allows the administrators to create, update, and manage XACML policies. The performance analysis shows that our proposed system adds only a small overhead to the existing security mechanism of OGSA-DAI.

Research on a Scheme of Heterogeneous Data Integration

2012 ◽  
Vol 546-547 ◽  
pp. 381-386
Author(s):  
Bao Sheng Wang ◽  
Sheng Yao Sun ◽  
Yan Yang Ma ◽  
Xin Feng Yang
Keyword(s):  
Data Integration ◽  
Web Service ◽  
Data Access ◽  
Heterogeneous Data ◽  
Grid Services ◽  
Component Structure ◽  
Heterogeneous Data Integration ◽  
Design Ideas ◽  
Open Grid Services Architecture ◽  
Test Result

Aiming at the limitation of Open Grid Services Architecture-Data Access and Integration middleware only face to JDBC, learning from the design ideas of OGSA-DAI, based on XML and web service, this paper proposes a middleware named XML Transformation-Data Access and Integration using ADO.NET. It analyzes the component structure of the middleware, the interaction of the workflow and the underlying data resources as well as the execution process of the workflow. It describes the conversion process between XML and database. Test result shows that the middleware gets good versatility and easy scalability in heterogeneous data access.

scholarly journals Integrating Open Grid Services Architecture Data Access and Integration with computational Grid workflows

2009 ◽  
Vol 367 (1897) ◽  
pp. 2521-2532 ◽  
Author(s):  
Tamas Kukla ◽  
Tamas Kiss ◽  
Peter Kacsuk ◽  
Gabor Terstyanszky
Keyword(s):  
Workflow Management ◽  
Data Access ◽  
Computational Grid ◽  
Management Systems ◽  
Grid Services ◽  
Integration Technique ◽  
Workflow Management Systems ◽  
Workflow Execution ◽  
Reference Implementation ◽  
Open Grid Services Architecture

Although many scientific applications rely on data stored in databases, most workflow management systems are not capable of establishing database connections during workflow execution. For this reason, e-Scientists have to use different tools before workflow submission to access their datasets and gather the required data on which they want to carry out computational experiments. Open Grid Services Architecture Data Access and Integration (OGSA-DAI) is a good candidate to use as middleware providing access to several structured and semi-structured database products through Web/Grid services. The integration technique and its reference implementation described in this paper enable e-Scientists to reach databases via OGSA-DAI within their scientific workflows at run-time and give a general solution that can be adopted by any workflow management system.

Semantic-Based Access Control for Data Resources in Open Grid Services Architecture - Data Access and Integration (OGSA-DAI)

2018 ◽  
pp. 1701-1725
Author(s):  
Vineela Muppavarapu ◽  
Soon M. Chung
Keyword(s):  
Control System ◽  
Access Control ◽  
Data Access ◽  
Grid Services ◽  
Control Policies ◽  
Ontology Language ◽  
Access Control Policies ◽  
Access Control System ◽  
Identity Based ◽  
Open Grid Services Architecture

This paper proposes a semantic-based access control system for the data resources in the Open Grid Services Architecture - Data Access and Integration (OGSA-DAI). OGSA-DAI is a widely used middleware for integrating data resources in Grids. However, the identity-based access control in OGSA-DAI causes substantial overhead for the resource providers in virtual organizations (VOs), because the access control information of individual users has to be maintained by each resource provider. To solve these problems, the authors propose a semantic-based access control system using Shibboleth and ontology. Shibboleth, an attribute authorization service, is used to manage the user attributes, and the Web Ontology Language (OWL) is used to represent the ontology of the data resources and users. By using ontology, VOs can resolve the differences in their terminologies and specify access control policies based on concepts and user roles, instead of individual resources and user identities. As a result, the administration overhead of the resource providers is reduced considerably. In addition, the eXtensible Access Control Markup Language (XACML) is used to specify the access control policies uniformly across multiple VOs. The authors also developed an XACML policy administration tool that allows the administrators to create, update, and manage XACML policies. The performance analysis shows that our proposed system adds only a small overhead to the existing security mechanism of OGSA-DAI.

Grid Technology for Smart Organizations

2011 ◽  
pp. 289-332
Author(s):  
Gergely Sipos ◽  
Péter Kacsuk
Keyword(s):  
Web Services ◽  
Autonomous Agents ◽  
Middle Part ◽  
Grid Technology ◽  
Grid Services ◽  
On Demand ◽  
Basic Goal ◽  
Open Grid Services Architecture ◽  
Service Grids ◽  
The Web

This chapter summarizes the most relevant results that grid research achieved in the last decade, it presents the actual issues of the topic, and it outlines how current and future results from this area can contribute to smart organizations. At the first place the basic goal of the Grid is presented and its state-of-the-art, service-based realization is discussed. This global infrastructure will one day connect together diverse types of hardware and software elements, abstracting them out as intelligent autonomous agents that can discover and collaborate with each other on demand. The middle part of the chapter introduces two potential middleware technologies that service grids can be built on. They are the Web services-based open grid services architecture (OGSA) and Jini. The final part of the chapter presents the future of service grids and the important role these flexible infrastructures will probably have in the life of smart organizations.

Execution Management for Mobile Service-Oriented Environments

2012 ◽  
pp. 62-82
Author(s):  
Kleopatra G. Konstanteli ◽  
Tom Kirkham ◽  
Julian Gallop ◽  
Brian Matthews ◽  
Ian Johnson ◽  
...  
Keyword(s):  
Mobile Network ◽  
Mobile Services ◽  
Distributed Applications ◽  
Mobile Service ◽  
Grid Services ◽  
Service Oriented ◽  
Execution Management ◽  
Multiple Domains ◽  
Open Grid Services Architecture ◽  
Public Demonstrations

This paper presents an Execution Management System (EMS) for Grid services that builds on the Open Grid Services Architecture (OGSA) while achieving “mobile awareness” by establishing a WS-Notification mechanism with mobile network session middleware. It builds heavily on the Session Initiation Protocol (SIP), used for managing sessions with mobile terminals (such as laptops and PDAs) where the services are running. Although the management of mobile services is different to that of ubiquitous services, the enhanced EMS manages both of them in a seamless fashion and incorporates all resources into one Mobile Dynamic Virtual Organization (MDVO). The described EMS has been implemented within the framework of the Akogrimo EU IST project and has been used to support mission critical application scenarios in public demonstrations, including composite and distributed applications made of both ubiquitous and mobile services within multiple domains.

Execution Management for Mobile Service-Oriented Environments

2010 ◽  
Vol 1 (3) ◽  
pp. 39-59
Author(s):  
Kleopatra G. Konstanteli ◽  
Tom Kirkham ◽  
Julian Gallop ◽  
Brian Matthews ◽  
Ian Johnson ◽  
...  
Keyword(s):  
Mobile Network ◽  
Mobile Services ◽  
Distributed Applications ◽  
Mobile Service ◽  
Grid Services ◽  
Service Oriented ◽  
Execution Management ◽  
Multiple Domains ◽  
Open Grid Services Architecture ◽  
Public Demonstrations

This paper presents an Execution Management System (EMS) for Grid services that builds on the Open Grid Services Architecture (OGSA) while achieving “mobile awareness” by establishing a WS-Notification mechanism with mobile network session middleware. It builds heavily on the Session Initiation Protocol (SIP), used for managing sessions with mobile terminals (such as laptops and PDAs) where the services are running. Although the management of mobile services is different to that of ubiquitous services, the enhanced EMS manages both of them in a seamless fashion and incorporates all resources into one Mobile Dynamic Virtual Organization (MDVO). The described EMS has been implemented within the framework of the Akogrimo EU IST project and has been used to support mission critical application scenarios in public demonstrations, including composite and distributed applications made of both ubiquitous and mobile services within multiple domains.

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