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06.12.2007 at 02:50PM PDT, ID: 22629828
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8.4

Data Model question

Asked by clintnash in MS SQL Server

I have a modeling issue that I am not sure exactly how to approach.  Let's take for exampe the current schema from my legacy system.

Coaches                                                                 Teams
--------------------------------------------------------------------------------------------
coachID (PK)                                                           TeamID (PK)
lastname                                                                  DivisionID (FK to divisions)
firstname                                                                 coachID (FK to Coaches)
address                                                                   Assistant_CoachID (FK to Coaches.CoachID)
city                                                                           Teamname.
etc.                                                                           etc.

In the above scenario coachID and Assistant_CoachID are both references to Coaches.CoachID. In this particula database, there are no relationships defined between tables, no referential integrity, etc.  So as I am updating the data model to include these things, I wasn't sure exactly how to approach this.  

(Parent)Coaches.CoachID has a one to many relationship with (Child)Teams.CoachID and  
(Parent)Coaches.CoachID has a one to zero to many relationship with (Child)Teams.CoachID

The ulitmate goal of this is to put an update trigger on the coachID so that when they are changed those changes will update the teams table.  Any thoughts about how to properly do this will be appreciated. For a change at this point I can modify the schema so any other approach is acceptable.Start Free Trial
[+][-]06.12.2007 at 03:04PM PDT, ID: 19270352

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[+][-]06.12.2007 at 03:09PM PDT, ID: 19270385

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[+][-]06.12.2007 at 03:18PM PDT, ID: 19270422

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[+][-]06.12.2007 at 03:29PM PDT, ID: 19270472

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[+][-]06.12.2007 at 03:37PM PDT, ID: 19270514

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Zone: MS SQL Server
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Solution Provided By: k_rasuri
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Solution Grade: A
 
 
[+][-]06.12.2007 at 03:45PM PDT, ID: 19270539

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[+][-]06.12.2007 at 07:42PM PDT, ID: 19271508

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[+][-]06.21.2007 at 01:33AM PDT, ID: 19331353

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