Folks, And a longer one: Comments from OGSA Data https://forge.gridforum.org/sf/go/topc4014 Responses in line:
Comments from the OGSA Data WG Page 8, Table: The list of data capabilities here does not reflect the OGSA architecture. I suggest that it be replaced with:
Data description Data access Data transfer Data storage Data replication Data federation Data caching Data security Data provisioning Session management Distributed transactions
This list includes areas that are currently addressed by the OGSA Data Architecture and additional areas that are relevant. Data provisioning has been addressed by the EGA Reference Model.
To update the list to the current OGSA Data thinking is an excellent idea, but this change is more substantial than a simple edit, so I would prefer to action this change in the next document version.
"Metadata" is not a capability. It is simply data that describes other data. There are many issues related to metadata, including formats, schemas, ontologies, consistency and more. Add particular ones if you wish, but don't just list " metadata".
At the level of generality addressed by the document, all the above apply. I believe that the reference covers all the sub categories you list, so I think we will leave it for now.
This table should list provenance tracking as a capability. This could be added to the data section or possibly another
I would push it to the next version.
Page 10, Authorisation: Note that the architecture whereby a using service "calls out" to an authorisation service is inadequate for some use cases. For example, the authorisation policy may be associated with the data being processed rather than the processing service.
As is an earlier response, this I believe is a more technical comment. But in any case it will probably still need to be a call out. We won't make any changes here until the next version.
Page 11, section 4.4: This should be called "Data transfer", or, if you insist, "Data movement". The body of the text correctly avoids the inaccurate assumption that all data is held in files.
This has been noted by several people and will be fixed.
Page 11, section 4.5: This should just be called "Data Provisioning". Data Grids include the other capabilities listed and they shouuldn't be lumped together. The first paragraph seems too general for inclusion here; everything it says is perfectly correct but it should appear earlier in the document.
These are good points and I this we can make these changes without disrupting the document.
I suggest that you add other sections called "Data Access" and "Storage". You might possibly others called "Data Replication" and "Data Federation".
These are certainly areas for inclusion, but this document is not aiming at the whole space, but rather an attempt hit high priorities. In the next version we may become broader, but this depends of the requirement gathering process in OGF. No changes are planed in this version.
Page 13, Table: "File Movement" -> "Data Transfer"
Agreed.
"Data Provisioning and Data Grids" -> "Data Access"
Above you suggested just Data Provisioning" I agree.
ByteIO should be listed under Data Access rather than Data Transfer.
Agreed. We should fix this.
Page 14, Table: "OGSA Data" should be listed against Data Access, Data Transfer, Data Replication, Data Storage, Data Federation and Data Security - or perhaps just against "Architecture". It should not be listed against Data Provisioning. The GSM-WG should be listed against Data Storage. Possibly DFDL-WG should be listed against Data Description.
Thank you. I agree with these changes, except I think that Data Provisioning is certainly within the remit of a Data Architecture WG.
Typos:
Page 2: The phrasing of the last sentence on page 2 could be read as saying that our focus is only "trans-national collections of supercomputers". This would disappoint most of our industry members.
Will fix.
Page 3, Collaboration Grids: "should no" -> "should not"
Will fix.
Page 8: "Table 2" -> "Table 1"?
Yes.
Page 8, Table: There are many references in this table to footnotes that do not exist.
There does seem to have been a word problem here. We will try to fix it.
Page 13: "Table 3" -> "Table 2"?
Yes.
Page 13, section 5.1: "Table 4" -> "Table 3", "Table 3" -> 'Table 2"?
Yes.
Page 14: "Table 4" -> "Table 3"?
Yes
Page 15: "Geoffery Fox" -> "Geoffrey Fox".
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