Re: Use case: OrderTracking-Shipping

On Thu, Mar 25, 2004 at 08:25:46PM -0500, Eric Prud'hommeaux wrote:
> FredCo sells a variety of products to consumers and maintains an order
> tracking database to track customer orders. The database is a
> conventional relational database with a schema normalized for their
> application

Each day, the shipping department packages and address the previous
day's orders. The address used comes from the shipping address
provided with this order but defaults to the customer's billing
address if none was provided.

This use case demonstrates a use of optional arcs in DAWG-QL. The
implementation, OrderTracking4-alg.sh [1], demonstrates translating
these to outer joins in SQL.

> [1] http://dev.w3.org/cvsweb/perl/modules/W3C/Rdf/test/OrderTracking4-alg.sh?rev=HEAD&content-type=text/x-cvsweb-markup
-- 
-eric

office: +81.466.49.1170 W3C, Keio Research Institute at SFC,
                        Shonan Fujisawa Campus, Keio University,
                        5322 Endo, Fujisawa, Kanagawa 252-8520
                        JAPAN
        +1.617.258.5741 NE43-344, MIT, Cambridge, MA 02144 USA
cell:   +1.857.222.5741 (does not work in Asia)

(eric@w3.org)
Feel free to forward this message to any list for any purpose other than
email address distribution.

Received on Thursday, 25 March 2004 20:32:06 UTC