Entity Framework Core - How to correctly map relationships with composite key?

EntityFramework - Composite Key Table with FK to another Composite Key Table

If both, then...City... and ...Company... You want to establish a one-on-one connection. I'm sorry, but using your model makes it impossible. Entity Framework needs that the main key of the dependent end also be the foreign key when defining a one-to-one connection; otherwise, EF doesn't recognize the relationship as one-to-one. The dependent part...

Creating composite primary key consisting off foreign keys in fluent API with ASP.NET core

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Entity Framework 6 Database First Doesn't Generate Entity on Table With Composite Key

Zzz-5-zzz and Gert Arnold's remark helped me choose the appropriate path....Object Framework built the entity after I added a column in addition to the two main keys. For which EF Database First will construct an object, consider the following example table definition:...create table [dbo].[CustomerRequests] ( [CustomerId] int not null, [Re...

Entity Framework Core Find and Composite Key

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Many-to-many relationship in Entity Framework Core when one entity has composite primary key

Comparable to adding a single column of FK is adding composite FK....The PK column(s) of the referenced object should be added first:...public class InvoiceLineProductCode { public Guid InvoiceLineId { get; set; } public InvoiceLine InvoiceLine { get; set; } public string ProductCodeCategory { get; set; } // <-- public string Produc...

Entity Framework Core Read & Update Multiple rows - Composite Primary Key

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Entity Framework Core Composite Key In One To Many Mapping

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Entity Framework (Core), Unique "Composite Columns" that are not the Key

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Cannot insert duplicate key in object - How to create composite key in Entity Framework Core

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Map entity to lookup table with composite foreign key that is partially hard-coded

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