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Re: Help with this db design
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Re: Help with this db design


  • Subject: Re: Help with this db design
  • From: Guido Neitzer <email@hidden>
  • Date: Sat, 22 Mar 2008 23:09:31 -0600

On 22.03.2008, at 23:02, Gustavo Pizano wrote:

Hi well the person can be in may convocations, yes, but only once per convocation.

So add a unique constraint on the database level (to be safe) and check for this condition in code (validateForSave) before saving to the database.


cug

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http://www.event-s.net

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  • Follow-Ups:
    • Re: Help with this db design
      • From: Art Isbell <email@hidden>
References: 
 >Help with this db design (From: Gustavo Pizano <email@hidden>)
 >Re: Help with this db design (From: Jean-François Veillette <email@hidden>)
 >Re: Help with this db design (From: Gustavo Pizano <email@hidden>)
 >Re: Help with this db design (From: Jean-François Veillette <email@hidden>)
 >Re: Help with this db design (From: Gustavo Pizano <email@hidden>)
 >Re: Help with this db design (From: Guido Neitzer <email@hidden>)
 >Re: Help with this db design (From: Gustavo Pizano <email@hidden>)
 >Re: Help with this db design (From: Guido Neitzer <email@hidden>)
 >Re: Help with this db design (From: Gustavo Pizano <email@hidden>)

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