On Jan 26, 2011, at 9:21 AM, David DelMonte wrote: > Hi all, I am trying to develop a core data model to meet a language grammar. > > In this grammar, there are verbs, tenses and persons. (There are also voices > - but my brain cannot hear them right now:) ).. > > One scenario is to have the verbs and tense names in a single entity. > However, this would require that each tense name is bound to a specific > person entity. > > Another scenario is to have the Verb and Persons Entities use the tense name > entity only as a lookup table.
Don't know what you mean by "lookup table", but I would approach it with a verb, tense, and person entities, with a "linker" table. This is an RDBMS technique--in Core Data terms, you would have an entity without any properties but with to-one relationships with all three (verb, tense, person) thereby allowing any combination of the three to exist without having redundant data. HTH, Keary Suska Esoteritech, Inc. "Demystifying technology for your home or business" _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
