Why does EntityFrameworkCore generate navigation property if there is no foreign key?

Question

User1725160972 posted

I have a such table schema:

CREATE TABLE Categories
(
    Id INT IDENTITY(1,1),
    Name varchar(100),
    CONSTRAINT PK_Category_Id PRIMARY KEY (Id)
)

CREATE TABLE Products
(
    Id INT IDENTITY(1,1),
    IdCategory INT NOT NULL
        CONSTRAINT FK_Products_IdCategory__Categories_Id FOREIGN KEY(IdCategory) REFERENCES Categories(Id),
    Name varchar(100), 
    Price decimal(18,2),
    ImageUrl varchar(256),
    CONSTRAINT PK_Product_Id PRIMARY KEY (Id)
)

I execute the following command in the Package Manager Console:

Scaffold-DbContext "Server=FOO-PC\SQL2014XP;Database=fooDatabase;Trusted_Connection=True;" 
    Microsoft.EntityFrameworkCore.SqlServer -OutputDir Models

Entity Framework Core generates the following domain classes:

public partial class Categories
{
    public Categories()
    {
        Products = new HashSet<Products>();
    }

    public int Id { get; set; }
    public string Name { get; set; }

    public virtual ICollection<Products> Products { get; set; }
}

public partial class Products
{
    public Products()
    {
        OrderItems = new HashSet<OrderItems>();
        ShoppingCartItems = new HashSet<ShoppingCartItems>();
    }

    public int Id { get; set; }
    public int IdCategory { get; set; }
    public string Name { get; set; }
    public decimal? Price { get; set; }
    public string ImageUrl { get; set; }

    public virtual Categories IdCategoryNavigation { get; set; }
    public virtual ICollection<Items> Items { get; set; }        
}

My question are:

1. Why does EF Core generates public virtual ICollection<Products> Products { get; set; } in Categories class?
2. Is it possible to prevent generation this property Products?