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Re: Setting up horizontal inheritance
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Re: Setting up horizontal inheritance


  • Subject: Re: Setting up horizontal inheritance
  • From: Ken Anderson <email@hidden>
  • Date: Mon, 3 Nov 2008 08:51:43 -0500


On Nov 3, 2008, at 12:29 AM, Chuck Hill wrote:

I've made Person abstract in the model. I've deleted the redundant EO (AMUserPreference), and UserPreference (which is in the same framework as Person) points to the abstract Person entity. I no longer generate a 'person' table, as I won't be instantiating Person.

That might be a bad idea. Some databases ( FrontBase) need this base table for PK generation.

Seriously? I would consider that a serious flaw. PK generation should always happen at the abstract level... You're saying that in FrontBase, you can't have primary keys based in an abstract entity??


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  • Follow-Ups:
    • Re: Setting up horizontal inheritance
      • From: Mike Schrag <email@hidden>
References: 
 >Re: Setting up horizontal inheritance (From: Chuck Hill <email@hidden>)
 >Re: Setting up horizontal inheritance (From: Paul Hoadley <email@hidden>)
 >Re: Setting up horizontal inheritance (From: Ken Anderson <email@hidden>)
 >Re: Setting up horizontal inheritance (From: Paul Hoadley <email@hidden>)
 >Re: Setting up horizontal inheritance (From: Chuck Hill <email@hidden>)

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