Home Forums Database Design Relational Theory Is My Foreign Key Table Unnecessary? RE: Is My Foreign Key Table Unnecessary?

  • January 3, 2018 at 5:13 am

    #1974190

    Phil Stratford - Wednesday, January 3, 2018 3:47 AM

    You're absolutely right that a sixth, seventh or even eighth value could be required in the future, but if that happened we could simply start writing the new value to the CHAR(10) column.

    After changing the constraint to allow the new values. DDL change + code change vs one more row added in one table.

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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