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Final call: OGSA Data Architecture
by Dave Berry 22 Sep '07

22 Sep '07

Dear all, The OGSA Data Architecture is, we believe, ready to submit for public comment. If you would like to review the document before we submit it, you can find the current draft at http://tinyurl.com/ypm4bv. Please give us any feedback by Tuesday September 18th (next week). Dave Berry Deputy Director, Research & E-infrastructure Development National e-Science Centre 15 South College Street, Edinburgh, EH8 9AA +44 131 651 4039 www.nesc.ac.uk <http://www.nesc.ac.uk/>

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Minutes; Next telcon Wednesday September 19th
by Dave Berry 07 Sep '07

07 Sep '07

Our next telcon will be on Wednesday 19th September at the usual time of 8:00am Pacific / 11:00am Eastern / 4:00pm UK / 5:00pm Europe. For this call, we will use the following teleconference #s: US: 877-421-0030. or 770-615-1247 UK: 0808-234-1969, or 207-026-0533 Passcode: 357276 The minutes of today's call are on GridForge: https://forge.gridforum.org/sf/go/doc14665?nav=1 Best wishes, Dave Berry Deputy Director, Research & E-infrastructure Development National e-Science Centre 15 South College Street, Edinburgh, EH8 9AA +44 131 651 4039 www.nesc.ac.uk <http://www.nesc.ac.uk/> <http://www.nesc.ac.uk/>

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New Version of Architecture Document...
by Allen Luniewski 06 Sep '07

06 Sep '07

... uploaded to GridForge. The only changes were to add the Storage to SRM mappings. Allen Luniewski IBM Cross Brand Services IBM Silicon Valley Laboratory 555 Bailey Ave. San Jose, CA 95141 408-463-2255 408-930-1844 (mobile)

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OGSA-DAI 3.0 Released.
by Mario Antonioletti 06 Sep '07

06 Sep '07

OGSA-DAI 3.0 Released! 7th September 2007 The OGSA-DAI project, a partner in OMII-UK, have released version 3.0 of their database access and integration software. OGSA-DAI provides an extensible framework designed for the exposure of structured data resources - whether these be databases, files or other types of data - onto a Grid. It allows these to be accessed via Web services. Most importantly, it provides a workflow engine for the execution of data-centric workflows involving data access, update, transformation and delivery operations. Driven by requirements from users the OGSA-DAI team have produced OGSA-DAI 3.0. This is a complete redesign and rewrite of the OGSA-DAI software and includes a number of major changes implemented in response to requirements from existing users: -OGSA-DAI's workflow units have been simplified and unified to be both more extensible and standardised, and to allow workflows to be composed more easily. -Multiple databases can be utilised within the scope of a single workflow. -Different parts of a workflow can operate upon different parts of a data stream concurrently. -Resources and services have been refactored to improve modularity and reduce functional overloading. -APIs have been completely refactored to allow developers to utilise application-specific functionality and databases within OGSA-DAI more easily. Versions of this release compliant with Axis 1.4, Axis 1.2.1 and Globus Toolkit 4.0.5 are available. This release provides a powerful product for both data integrators and developers of data applications to build upon and which the OGSA-DAI team hopes will benefit the e-Science community. To download OGSA-DAI 3.0 visit: http://www.ogsadai.org.uk/downloads/ To find out more about OGSA-DAI 3.0 read the user doc at: http://www.ogsadai.org.uk/documentation/ogsadai3.0 To find out more about OGSA-DAI visit: http://www.ogsadai.org.uk The OGSA-DAI project - which involves both EPCC and NeSC - is funded by EPSRC through OMII-UK. For further information, contact the OGSA-DAI team (info(a)ogsadai.org.uk) For further information about OMII-UK visit http://www.omii.ac.uk.

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Minutes; next telcon Friday Sep 7th
by Dave Berry 28 Aug '07

28 Aug '07

Our next telcon will be on Friday 7th September at the usual time of 8:00am Pacific / 11:00am Eastern / 4:00pm UK / 5:00pm Europe. For this call, we will use the following teleconference #s: US: 877-421-0030. or 770-615-1247 UK: 0808-234-1969, or 207-026-0533 Passcode: 357276 The minutes of today's call are on GridForge: https://forge.gridforum.org/sf/go/doc14744?nav=1 Best wishes, Dave Berry Deputy Director, Research & E-infrastructure Development National e-Science Centre 15 South College Street, Edinburgh, EH8 9AA +44 131 651 4039 www.nesc.ac.uk <http://www.nesc.ac.uk/>

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Minutes; next call Tuesday 28th August
by Dave Berry 20 Aug '07

20 Aug '07

Our next telcon will be on Tuesday 28th August at the usual time of 8:00am Pacific / 11:00am Eastern / 4:00pm UK / 5:00pm Europe. For this call, we will use the following teleconference #s: US: 877-421-0030. or 770-615-1247 UK: 0808-234-1969, or 207-026-0533 Passcode: 357276 The minutes of today's call are on GridForge: https://forge.gridforum.org/sf/go/doc14736?nav=1 Best wishes, Dave Berry Deputy Director, Research & E-infrastructure Development National e-Science Centre 15 South College Street, Edinburgh, EH8 9AA +44 131 651 4039 www.nesc.ac.uk <http://www.nesc.ac.uk/>

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Architecture Document Updated...
by Allen Luniewski 15 Aug '07

15 Aug '07

... small changes in 3.2.2 and 3..2.3 to reflect the change in WS-Naming from "abstract name" to "endpointidentifier". Fixed dangling sentence in 15.1. Allen Luniewski IBM Cross Brand Services IBM Silicon Valley Laboratory 555 Bailey Ave. San Jose, CA 95141 408-463-2255 408-930-1844 (mobile)

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Re: [OGSA-D-WG] [ogsa-wg] Definition of "data service"
by Dave Berry 24 Jul '07

24 Jul '07

I attach the current glossary definitions from the OGSA Data WG. The definitions of data service & data resource are as follows: Data resource: An entity (and its associated framework) that provides a data access mechanism or can act as a data source or data sink. Data service: A service that provides interfaces to the capabilities and data of one or more data resources within a service-oriented architecture. When I adapted the OGSA 1.5 document to use the latest definitions from the OGSA Data WG, I realised we still needed a term to describe all the related services as well. The current proposal is to use the term "Data Management Services" (which mirrors "Execution Management Services"): In OGSA, the capability concerned with the storage, description, access, update, location, transfer and other management of data. For the record, there are just two terms left to define in the attached file. I think we need to define "data staging" because this is a term that many people in the industry at large are not familiar with. We probably also need a definition of "storage management" (or possibly just "storage"). Best wishes, Dave. _____ From: ogsa-wg-bounces(a)ogf.org [mailto:ogsa-wg-bounces@ogf.org] On Behalf Of guru prasad Sent: 20 July 2007 19:52 To: Subramaniam, Ravi; Donal K. Fellows Cc: ogsa-d-wg(a)ogf.org; Allen Luniewski; ogsa-wg Subject: Re: [ogsa-wg] [OGSA-D-WG] Definition of "data service" Did we decide on a final definition?

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Minutes; Next telcon July 20th
by Dave Berry 13 Jul '07

13 Jul '07

Our next teleconference will be July 20 at the usual time. For this call, we will use the following teleconference #s: US: 877-421-0030. or 770-615-1247 UK: 0808-234-1969, or 207-026-0533 Passcode: 357276 The minutes of today's call are attached and on GridForge. Dave Berry Deputy Director, Research & E-infrastructure Development National e-Science Centre 15 South College Street, Edinburgh, EH8 9AA +44 131 651 4039 www.nesc.ac.uk <http://www.nesc.ac.uk/>

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Re: [OGSA-D-WG] [ogsa-wg] Definition of "data service"
by Allen Luniewski 09 Jul '07

09 Jul '07

I think that it would be a mistake to think of data as some sort of abstraction of a file. Certainly file-like things are an instance of data. But there are others: relational databases, object oriented databases, XML databases, streams of data (although streams are out of scope for V1 of the data architecture). Allen Luniewski IBM Cross Brand Services IBM Silicon Valley Laboratory 555 Bailey Ave. San Jose, CA 95141 408-463-2255 408-930-1844 (mobile) "Donal K. Fellows" <donal.k.fellows@ To manchester.ac.uk> guru prasad <guru_bn(a)yahoo.com> cc 07/07/2007 10:43 Allen Luniewski/Almaden/IBM@IBMUS, AM Dave Berry <daveb(a)nesc.ac.uk>, ogsa-d-wg(a)ogf.org, ogsa-wg <ogsa-wg(a)ogf.org> Subject Re: [ogsa-wg] [OGSA-D-WG] Definition of "data service" guru prasad wrote: > Thank you for your comments Allen. > > In that case I vote for Dave Berry's definition: > > "A service that provides interfaces to the capabilities and data of one > or more data resources within a service-oriented architecture." There is a separate question as to whether the data *is* a capability; I suspect it is, at least in some abstract sense. On the other hand, you might wish to distinguish the data as a special kind of capability that needs non-generic handling. > and the Data Resource is ..... A data resource is an abstraction of a file, so I'd imagine that you'd want to describe it as a resource that is an ordered collection of organized information. (The idea is that it doesn't have to be in a file, but it does have many file-like characteristics.) It's strongly beneficial to the overall OGSA if you can have data resources being a subclass of resources (by referencing the OGSA glossary). Donal.

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