Strategy to manage foreign key from another system/database












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I googled a lot but alas found nothing. This is a re-post from stackoverflow as someone suggested that it is better suited here.



There is a system/database in the company which stores all the consultants working for the company.



Our project needs to store the consultants assigned to clients.



We use the id of the consultant in our project. So consultant id is kind of a foreign key, but from another system/database.



What happens from time to time, is that the consultant leaves the company. Sometimes a new consultant replaces this person, sometimes not.



Basically, the id that we have been using for a client becomes invalid.



If the consultant was stored in our database, we could have used foreign keys or some other internal mechanism to prevent this.



I can't imagine that we are the only project in the world with this kind of a problem.



What are the strategies to deal with this scenario? Are there any best practices?



Thanks a lot!



Regards Tathagat










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    0















    I googled a lot but alas found nothing. This is a re-post from stackoverflow as someone suggested that it is better suited here.



    There is a system/database in the company which stores all the consultants working for the company.



    Our project needs to store the consultants assigned to clients.



    We use the id of the consultant in our project. So consultant id is kind of a foreign key, but from another system/database.



    What happens from time to time, is that the consultant leaves the company. Sometimes a new consultant replaces this person, sometimes not.



    Basically, the id that we have been using for a client becomes invalid.



    If the consultant was stored in our database, we could have used foreign keys or some other internal mechanism to prevent this.



    I can't imagine that we are the only project in the world with this kind of a problem.



    What are the strategies to deal with this scenario? Are there any best practices?



    Thanks a lot!



    Regards Tathagat










    share|improve this question







    New contributor




    Tathagat is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























      0












      0








      0








      I googled a lot but alas found nothing. This is a re-post from stackoverflow as someone suggested that it is better suited here.



      There is a system/database in the company which stores all the consultants working for the company.



      Our project needs to store the consultants assigned to clients.



      We use the id of the consultant in our project. So consultant id is kind of a foreign key, but from another system/database.



      What happens from time to time, is that the consultant leaves the company. Sometimes a new consultant replaces this person, sometimes not.



      Basically, the id that we have been using for a client becomes invalid.



      If the consultant was stored in our database, we could have used foreign keys or some other internal mechanism to prevent this.



      I can't imagine that we are the only project in the world with this kind of a problem.



      What are the strategies to deal with this scenario? Are there any best practices?



      Thanks a lot!



      Regards Tathagat










      share|improve this question







      New contributor




      Tathagat is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      I googled a lot but alas found nothing. This is a re-post from stackoverflow as someone suggested that it is better suited here.



      There is a system/database in the company which stores all the consultants working for the company.



      Our project needs to store the consultants assigned to clients.



      We use the id of the consultant in our project. So consultant id is kind of a foreign key, but from another system/database.



      What happens from time to time, is that the consultant leaves the company. Sometimes a new consultant replaces this person, sometimes not.



      Basically, the id that we have been using for a client becomes invalid.



      If the consultant was stored in our database, we could have used foreign keys or some other internal mechanism to prevent this.



      I can't imagine that we are the only project in the world with this kind of a problem.



      What are the strategies to deal with this scenario? Are there any best practices?



      Thanks a lot!



      Regards Tathagat







      foreign-key






      share|improve this question







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      Tathagat is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      share|improve this question







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      Tathagat is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      asked 10 mins ago









      TathagatTathagat

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