jeudi 27 novembre 2008
Attributs, Propriétés ...? !
"But as common as the term 'attribute' may be, I don't know what it means. The fact that I've been using the term is totally irrelevant "
opinion à la quelle souscrit aussi M.Jackson [JAC83]
"..in previous chapters we have referred to attributes of entites and of actions. Our chief purpose in making these references has been to allay fears that a central topic in some approaches to database design might pass without comment. Attributes are a vexed topic, raising a variety of awkward questions....Attributes is not a JSD term, so we are not concerned to answer the general question 'what is an attribute ?' "
JAC83 Jackson M.: "System Development", Prentice-Hall,1983
KEN84 Kent W.:"Data And Reality", 4me édition,North-Holland,1984