See also: IRC log
<Ashok> meeting RDB2RDF
<Ashok> scribenick: joebetz
<Ashok> RESOLUTION: Telcon on July 4 is cancelled
actions:
notes from invormal meeting at ESWC:
Integration between databases using globally unique identifiers
Can we agree on common identifiers to be used across the web?
<Ashok> AShok: Are the identifiers URIs?
<Ashok> Themis: may not be
<Ashok> Jenny Green: This may be an output from the groups -- DB identifiers vs. RDF identifiers
Ashok: globally unique identifiers should be URIs since this is a w3c activity
there is a sub group of which identifiers should be associated with different domains (e.g. LSIDs)
<Ashok> Themis: OCCAM will create a facility to create global identifiers
Themis: Can distribute paper with general idea/architecture.
Catherine: Discussed importance of figuring out what we are going to standardize at ESWC.
Jenny: Do we want to limit ourselves to RDF or do we want to include OWL, etc?
Ashok: Yes, we should think about OWL.
Jenny: Might be good to start thinking about a name (i.e not RDB2RDF)
Another potential approach, company?
Ashok, what should we deliver? Background: this group will not write a standard, we can produce papers, surveys, and can recommend that W3C start a working group to standardize something.
Final report in Feb.
We should report a summary, currently this is a wiki, can we convert this?
Orri: submit this as a
report
... take wiki and convert this to a paper, all members add to
it
... submit this to conf, what was the name?
... Generate more interest, create more discussions if we
submit.
Ashok: we should at least write
the outlines of a working group charter?
... we can do this in two directions, we can start w/ schema
and write RDF. We can also start with ontology that does not
precisely match data.
Jenny: Might be best to start
with saying what needs to be in the mapping rather than
recommending a language.
... Start with requirements, and decide best approach from
requirements.
Ashok: approach should both
directions: RDB->RDF/OWL, OWL->Mapping, and we should
work from requirements? Agreed.
... Update logs might be useful, but there is no sparql update
language now. Ideas out there are Andy's Sparql/Update, there
is another. Is update something we should examine?
Keeping search indexes up-to-date, for example, would benefit from update notifications.
(above is Soren)
Soren: Has idea of what updates might look like.
Update notifications are not specific to RDB or mapping.
Andrew: Should be careful to keep group focused. While update logs are useful we might recommend for different working group to stay focused.
Ashok: Topic: Translating SPARQL
to SQL. If data is in database, translate SPARQ to SQL. Should
we standardize?
... Standardize the algorithm that is. Concensus seems to be
no.
Andrew: Groups can produce
artifacts as well, we could produce an applet or open source
code to demonstrate translation.
... Would be specific to mapping the group produces.
Jenny: We may not always not want
to map to SQL.
... Services or other intermediate layers might be between DB
and SPARQL, might not want to target SQL specifically.
Ashok: Will send out summary,
request comments
... Presentation next week: RDB to ontology
... Think about how we get started? Volunteers are welcome to
take on topics.
Orri: Try to prepare wiki page
Linked data planet next tues, weds, Attendees want to meet?
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