Hi Dave, I think the pictures give a nice illustration of the basic structure. On the 2 diagrams you have a line going directly from the Storage Service to the Stored Resources Service. Should this line actually go via an interface on one or other of the services? Cheers, Stephen. -----Original Message----- From: owner-ogsa-d-wg@ggf.org [mailto:owner-ogsa-d-wg@ggf.org] On Behalf Of Dave Berry Sent: 22 January 2006 16:37 To: ogsa-d-wg@gridforum.org Subject: [ogsa-d-wg] The big picture Dear All, I've been asked to provide a diagram that shows the "big picture" of the OGSA Data Architecture. This would be used in the OGSA 1.5 document and in the overview section of our document(s), and perhaps also in powerpoint presentations. I've come up with the pair of diagrams and associated text in the attachment. Please take a look. Best wishes, Dave Berry Research Manager, National e-Science Centre 15 South College St., Edinburgh Tel: +44 131 6514039
Hi, A couple of points from me too: o The arrows between the services - what do they mean? Are these web service communications, i.e. SOAP? o I feel slightly uneasy about coupling interfaces with services - at some level the interfaces that compose a service should be freer (up to the implementors) and not prescribed by the data architecture. Some may read the diagram as a prescriptive composition. o I would like to be able to, at least in principle, couple the transfer operation, with the access operation so if I have a pile of data to transfer to be able to do it through one service as opposed to trying to couple services together which would be a more complex operation (which admittedly may be required at some points). o Not sure about the nomenclature of the Transfer services whic operates on "Source" interfaces - can these just be end-points or something? Else, what type of functionality does a "Source" interface provide? Also, at some point this may also operate as a "sink" or is it always going to be a source? I guess the good point of having such a diagram is that it immediately allows a lot of questions to be asked :-) so this is a good start. Mario On Mon, 23 Jan 2006, Stephen Davey wrote:
Hi Dave, I think the pictures give a nice illustration of the basic structure.
On the 2 diagrams you have a line going directly from the Storage Service to the Stored Resources Service. Should this line actually go via an interface on one or other of the services?
Cheers, Stephen.
-----Original Message----- From: owner-ogsa-d-wg@ggf.org [mailto:owner-ogsa-d-wg@ggf.org] On Behalf Of Dave Berry Sent: 22 January 2006 16:37 To: ogsa-d-wg@gridforum.org Subject: [ogsa-d-wg] The big picture
Dear All,
I've been asked to provide a diagram that shows the "big picture" of the OGSA Data Architecture. This would be used in the OGSA 1.5 document and in the overview section of our document(s), and perhaps also in powerpoint presentations. I've come up with the pair of diagrams and associated text in the attachment. Please take a look.
Best wishes,
Dave Berry Research Manager, National e-Science Centre 15 South College St., Edinburgh Tel: +44 131 6514039
+-----------------------------------------------------------------------+ |Mario Antonioletti:EPCC,JCMB,The King's Buildings,Edinburgh EH9 3JZ. | |Tel:0131 650 5141|mario@epcc.ed.ac.uk|http://www.epcc.ed.ac.uk/~mario/ | +-----------------------------------------------------------------------+
participants (2)
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Mario Antonioletti
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Stephen Davey