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Asked: 2026-06-06T03:05:44+00:00

I’m struggling on how to map out the model for a database I’m looking

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I’m struggling on how to map out the model for a database I’m looking to build. I’ll be using SQL2LINQ in C# once I have the database modeled correctly.

The first part that I’m looking at is designing the SQL Tables for distribution lists.

These DL seem quite complex as the following rules apply :

  1. There are three different types of DLs (Used for specific events).
  2. Each type of DL will contain multiple DLs (can be more than 10).
  3. A person can be in all three different types of DL.
  4. A person can be in multiple DLs of the same type.

For the person, I will be holding information such as :

  1. Forename
  2. Surname
  3. Contact Number
  4. Email Address

What I dont like is the idea of duplicating information, having the same person in the database multiple times; that seems not so clean.

Any help would be greatly appreciated, I can’t quite wrap my head around the best way to do this.

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1 Answer

  1. Editorial Team

    It sounds as if you just want a many-to-many relationship between people and distribution lists, which you can model with a junction table:

    Person

    • Id
    • Forename
    • Etc

    DistributionListEntries

    • Id
    • DistributionListId
    • PersonId

    DistributionList

    • Id
    • Type

    You could either store the Type directly in the distribution list table, or have this as a foreign key to a DistributionListTypes table with additional information about the distribution list type.

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