Store.cs

// Data Layer Model (Entity)

public class Store : IEntity<int>, ISlug, ILocatable
{
    public int Id { get; set; }
    public string TypeId { get; set; }

    [Required]
    [StringLength(50)]
    public string Name { get; set; }

    // ISlug

    [Required]
    [StringLength(100)]
    public string Slug { get; set; }

    // Others

    [Required]
    [StringLength(15)]
    public string PhoneNumber { get; set; }

    [Required]
    [StringLength(500)]
    public string Address { get; set; }

    // ILocatable

    [Required]
    public DbGeography Location { get; set; }

    // IEntity

    public DateTimeOffset CreatedOn { get; set; }

    public StoreType Type { get; set; }
    public ICollection<StoreImage> StoreImages { get; set; }
    public ICollection<StoreRating> StoreRatings { get; set; }
}

StoreRepresentation.cs

// Business Layer Objects

public class StoreRepresentation
{
    public int Id { get; set; }
    public string Type { get; set; }
    public string Name { get; set; }
    public string Slug { get; set; }
    public string PhoneNumber { get; set; }
    public string Address { get; set; }
    public Location Location { get; set; }
    public RatingRepresentation RatingSummary { get; set; }
}

public class Location
{
    public Location(double latitude, double longitude)
    {
        Latitude = latitude;
        Longitude = longitude;
    }

    public double Latitude { get; private set; }
    public double Longitude { get; private set; }
}
    
public class RatingRepresentation
{
    public int RatingCount { get; set; }
    public float? RatingPoint { get; set; }
}

StoreResource.cs

// API Layer models (inside the PCL project) which I use inside my API project and .NET Client project (HttpClient)

public class StoreResource : IResource
{
    public int Id { get; set; }
    public string Type { get; set; }
    public string Name { get; set; }
    public string Slug { get; set; }
    public string PhoneNumber { get; set; }
    public string Address { get; set; }
    public LocationResource Location { get; set; }
    public RatingSummaryResource RatingSummary { get; set; }
}

public class LocationResource : IResource
{
    public LocationIResource()
    {
    }

    public LocationResource(double latitude, double longitude)
    {
        Latitude = latitude;
        Longitude = longitude;
    }

    public double Latitude { get; set; }
    public double Longitude { get; set; }
}

public class RatingSummaryResource : IResource
{
    public int RatingCount { get; set; }
    public float? RatingPoint { get; set; }
}