| OCR Text |
Show , - j ... /..J ariatle ber of times (e. g. the ?cblicaics cf a Etities ic are associated i serre sort of set or other iter-e:ity Etructcre. Tere are, of corse, cases w:-:ere oe would lie to factor out ttis ifcrmatic ayway, tut at otr ties i: forces one to represent corrcents or properties which are rrore rreainqful as "part o" or "descriptive of" SOIT,e object. For excrrle, the cc:;trol ooits for a spline curve are only rreaningful as a collection, not individually. Eecause oe has a uch wider choice of what to represent as an independent object and , what to re9resent as a attribute in the context of that ojec:, it is possible to desicn rrodels wich conform closely ith one's ow ontoloic21 ?artitionig of the Te c:osure featre of ot4ects sives the 5vste another irrportant ptoperty. The internal structure of ay c f he structure of other types. This feature rrakes Object rrodels v e r y flexible. localized to that object and only those prograrrs which rrani?lat it. The applicatio ?ro9raer need only be farriliar with those object types on wic:-: the pro?rar USt |
