TY  - CONF
T1  - OGSA-DAI: Two Years On
T2  - GGF10
Y1  - 2004
A1  - Antonioletti, Mario
A1  - Malcolm Atkinson
A1  - Rob Baxter
A1  - Borley, Andrew
A1  - Neil Chue Hong
A1  - Collins, Brian
A1  - Jonathan Davies
A1  - Hardman, Neil
A1  - George Hicken
A1  - Ally Hume
A1  - Mike Jackson
A1  - Krause, Amrey
A1  - Laws, Simon
A1  - Magowan, James
A1  - Jeremy Nowell
A1  - Paton, Norman W.
A1  - Dave Pearson
A1  - To
AB  - The OGSA-DAI project has been producing Grid-enabled middleware for almost two years now, providing data access and integration capabilities to data resources, such as databases, within an OGSA context. In these two years, OGSA-DAI has been tracking rapidly evolving standards, managing changes in software dependencies, contributing to the standardisation process and liasing with a growing user community together with their associated data requirements. This process has imparted important lessons and raised a number of issues that need to be addressed if a middleware product is to be widely adopted. This paper examines the experiences of OGSA-DAI in implementing proposed standards, the likely impact that the still-evolving standards landscape will have on future implementations and how these affect uptake of the software. The paper also examines the gathering of requirements from and engagement with the Grid community, the difficulties of defining a process for the management and publishing of metadata, and whether relevant standards can be implemented in an efficient manner. The OGSA-DAI software distribution and more details about the project are available from the project Web site at http://www.ogsadai.org.uk/.
JF  - GGF10
CY  - Berlin, Germany
ER  - 

TY  - CONF
T1  - Experiences of Designing and Implementing Grid Database Services in the OGSA-DAI project
T2  - Global Grid Forum Workshop on Designing and Building Grid Services/GGF9
Y1  - 2003
A1  - Antonioletti, Mario
A1  - Neil Chue Hong
A1  - Ally Hume
A1  - Mike Jackson
A1  - Krause, Amy
A1  - Jeremy Nowell
A1  - Charaka Palansuriya
A1  - Tom Sugden
A1  - Martin Westhead
AB  - This paper describes the experiences of the OGSA-DAI team in designing and building a database access layer using the OGSI and the emerging DAIS GGF recommendations. This middleware is designed for enabling other UK e-Science projects that require database access and providing the basic primitives for higher-level services such as Distributed Query Processing. OGSA-DAI also intends to produce one of the required reference implementations of the DAIS specification once this becomes a proposed recommendation and, until then, scope out their ideas, provide feedback as well as directly contributing to the GGF working group. This paper enumerates the issues that have arisen in tracking the DAIS and OGSI specifications whilst developing a software distribution using the Grid services model; trying to serve the needs of the various target communities; and using the Globus Toolkit OGSI core distribution. The OGSA-DAI software distribution and more details are available from the project web site at http://www.ogsadai.org.uk/.
JF  - Global Grid Forum Workshop on Designing and Building Grid Services/GGF9
CY  - Chicago, USA
ER  -