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 - 14:01:09 CST
