HI, "If the multiplicity field is ONE, its a MOVE" "If the multiplicity is MANY, it's a COPY"
Yet in the diagrams below, The movie reference which has multiplicity of Many is showon to be MOVED from one director to another. Similarly in the digram below it, The director which has a multilplicity of One is shown to have his refernce COPIED from one Movie to another. Arent the above two a contradiction of the rules laid out. ??
posted 10 years ago
hi Amitabha Batranab,
A movie can only have 1 Director (multiplicity of Director is one) Therefore: if you change a movie's Director, the movie's reference will move. (the movie will only have the new Director as Director)
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