Sqlite

public sealed class Channel
{
   public IEnumerable<Profile> Profiles { get; set; }
   public IconBlueprints IconBlueprints { get; set; }
   public IconMapping IconMapping { get; set; }
}

public sealed class Profile
{
   public IEnumerable<string> ExtraFields { get; set; }
   public IconBlueprints IconBlueprints { get; set; }
   public IconMapping IconMapping { get; set; }
   public IEnumerable<Structure> Structures { get; set; }
}

public sealed class IconBlueprints {
	// Lots of Blueprint types
}

public sealed class Blueprint
{
   public IEnumerable<int> HangerPosition { get; set; }
   public IEnumerable<Layer> Layers { get; set; }
   public Blueprint Horizontal { get; set; }
}

public sealed class Layer
{
   public IEnumerable<int> Size { get; set; }
   public IEnumerable<int> Offset { get; set; }
}

public sealed class IconMapping
{
   public ExtensionBasedIconMapping ExtensionBased { get; set; }
   public IEnumerable<ObjectType> ObjectTypeBased { get; set; }
}

public sealed class ExtensionBasedIconMapping
{
   public IEnumerable<Extension> Spreadsheet { get; set; }
   public IEnumerable<Extension> Text { get; set; }
   public IEnumerable<Extension> MsWord { get; set; }
   public IEnumerable<Extension> MsExcel { get; set; }
   public IEnumerable<Extension> Presentation { get; set; }
   public IEnumerable<Extension> Video { get; set; }
   public IEnumerable<Extension> Audio { get; set; }
   public IEnumerable<Extension> Photo { get; set; }
   public IEnumerable<Extension> Booklet { get; set; }
   public IEnumerable<Extension> Epub { get; set; }
   public IEnumerable<Extension> Ibooks { get; set; }
   public IEnumerable<Extension> Cad { get; set; }
   public IEnumerable<Extension> WebApp { get; set; }
}

public sealed class Structure
{
   public IEnumerable<Structure> Structures { get; set; }
   public IEnumerable<Structure> Photos { get; set; }
}