- From: Harry Halpin <hhalpin@w3.org>
- Date: Tue, 20 Apr 2010 05:58:21 +0100 (BST)
- To: "RDB2RDF WG" <public-rdb2rdf-wg@w3.org>
Everyone, I have a distinct memory of some people noting that a standard was not really needed in this area. Therefore, I have added a brief use-case (it does not really fit the others, since it does not make requirements on expressivity) that explains the case for a standard in this area. However, I do think it helps motivate the need for a standard in this area. I am interested in any comments on this. The use-case has been added to the wiki [1] == Migration Use Case == One of the reasons for open standards is to allow easy migration between different systems. Just as a single web-page in HTML can be viewed both my two different web browsers from different vendors, a single relational data to RDF mapping standard should allow a user from one database to expose their data as RDF and then, when they export their data to another database, allow the newly imported data to be queried as RDF without changing the mapping file. For example, imagine that a database administrator is working on exposing weather data as linked data to be found and consumed by other applications. At first, this weather data is stored in a light-weight database (such as MySQL). However, as more and more weather data is collected, and more and more users access this RDF, the light-weight database has difficulty scaling, providing problems for users. Therefore, the database administrator migrates their database to a more heavy-weight database (such as Oracle Database 11g). However, the database administrator do not want to have re-create the ability to view the data as RDF using a vendor-specific mapping file, but instead wants to seamlessly migrate the view of their data as RDF. A standardized mapping between relational data and RDF allows the database administrator to migrate the view of their data as RDF across databases, allowing the vendors to compete on functionality and features rather than forcing database administrators to rewrite their entire relational data to RDF mapping when they want to migrate their data from one database to another. [1] http://www.w3.org/2001/sw/rdb2rdf/wiki/Draft_of_Use_Cases#Migration_Use_Case
Received on Tuesday, 20 April 2010 04:58:24 UTC