Re: Objects and Relations

On 15 fév, 20:21, "JOG" <j..._at_cs.nott.ac.uk> wrote: <<Technically, a lego piece occupies an interval, but since lego pieces
are of fixed size, one can encode the interval as a location and an orientation. >>
In other words, one would separate LegoBlocks entity from Position then establish a M:N cardinality between the two. In Position we may have XYZ + Height + Rotation angle in LegoBlocks proper attributes describing the Legoblock *object such as Shape + Color . Finally Positionned_LegoBlock with association of Position and LegoBlock pk's... Received on Thu Feb 15 2007 - 21:01:09 CET