diff --git a/FurnitureFactory/FurnitureFactoryDataModels/IIdcs.cs b/FurnitureFactory/FurnitureFactoryDataModels/IId.cs
similarity index 100%
rename from FurnitureFactory/FurnitureFactoryDataModels/IIdcs.cs
rename to FurnitureFactory/FurnitureFactoryDataModels/IId.cs
diff --git a/FurnitureFactory/FurnitureFactoryDataModels/Models/IHeadsetModel.cs b/FurnitureFactory/FurnitureFactoryDataModels/Models/IHeadsetModel.cs
new file mode 100644
index 0000000..05f7aef
--- /dev/null
+++ b/FurnitureFactory/FurnitureFactoryDataModels/Models/IHeadsetModel.cs
@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureFactoryDataModels.Models
+{
+    internal interface IHeadsetModel : IId
+    {
+        int Cost { get;}
+        string Size { get; }
+        public Dictionary<int, IHeadsetModuleModel> HeadsetModuleId { get; }
+    }
+}
diff --git a/FurnitureFactory/FurnitureFactoryDataModels/Models/IOrdersModel.cs b/FurnitureFactory/FurnitureFactoryDataModels/Models/IOrdersModel.cs
new file mode 100644
index 0000000..83eb877
--- /dev/null
+++ b/FurnitureFactory/FurnitureFactoryDataModels/Models/IOrdersModel.cs
@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureFactoryDataModels.Models
+{
+    internal interface IOrdersModel : IId
+    {
+        DateTime Date { get; }
+        string Status { get; }
+        public Dictionary<int, IFurnitureModel> FurnitureId { get; }
+        public Dictionary<int, IHeadsetModel> HeadsetId { get; }
+    }
+}
diff --git a/FurnitureFactory/FurnitureFactoryDataModels/Models/ISalesSalonsModel.cs b/FurnitureFactory/FurnitureFactoryDataModels/Models/ISalesSalonsModel.cs
new file mode 100644
index 0000000..c1ada21
--- /dev/null
+++ b/FurnitureFactory/FurnitureFactoryDataModels/Models/ISalesSalonsModel.cs
@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureFactoryDataModels.Models
+{
+    internal interface ISalesSalonsModel  : IId
+    {
+        string Name { get; }
+        string Address { get; }
+        public Dictionary<int, IOrdersModel> OrdersId { get; }
+    }
+}