diff --git a/PyroFetes/Models/Contact.cs b/PyroFetes/Models/Contact.cs
index 88ef5a4..e1573ad 100644
--- a/PyroFetes/Models/Contact.cs
+++ b/PyroFetes/Models/Contact.cs
@@ -19,4 +19,5 @@ public class Contact
     
     public List<Communication>? Communications { get; set; }
     public List<StaffContact>? StaffContacts { get; set; }
+    public List<ContactServiceProvider>? ContactServiceProviders { get; set; }
 }
\ No newline at end of file
diff --git a/PyroFetes/Models/ContactServiceProvider.cs b/PyroFetes/Models/ContactServiceProvider.cs
new file mode 100644
index 0000000..dc310d8
--- /dev/null
+++ b/PyroFetes/Models/ContactServiceProvider.cs
@@ -0,0 +1,14 @@
+using System.ComponentModel.DataAnnotations;
+using Microsoft.EntityFrameworkCore;
+
+namespace PyroFetes.Models;
+
+[PrimaryKey(nameof(ContactId), nameof(ServiceProviderId))]
+public class ContactServiceProvider
+{
+    [Required] public int ContactId { get; set; }
+    [Required] public int ServiceProviderId { get; set; }
+    
+    public Product? Contact { get; set; }
+    public DeliveryNote? ServiceProvider { get; set; }
+}
\ No newline at end of file
diff --git a/PyroFetes/Models/Contract.cs b/PyroFetes/Models/Contract.cs
new file mode 100644
index 0000000..97cd821
--- /dev/null
+++ b/PyroFetes/Models/Contract.cs
@@ -0,0 +1,15 @@
+using System.ComponentModel.DataAnnotations;
+using Microsoft.EntityFrameworkCore;
+
+namespace PyroFetes.Models;
+
+[PrimaryKey(nameof(ShowId), nameof(ServiceProviderId))]
+public class Contract
+{
+    [Required] public int ShowId { get; set; }
+    [Required] public int ServiceProviderId { get; set; }
+    [Required] public string? TermsAndConditions { get; set; }
+
+    public Show? Show { get; set; }
+    public ServiceProvider? ServiceProvider { get; set; }
+}
\ No newline at end of file
diff --git a/PyroFetes/Models/Customer.cs b/PyroFetes/Models/Customer.cs
index 545bca4..da6dbba 100644
--- a/PyroFetes/Models/Customer.cs
+++ b/PyroFetes/Models/Customer.cs
@@ -12,4 +12,5 @@ public class Customer
     public CustomerType? CustomerType { get; set; }
     
     public List<Contact>? Contacts { get; set; }
+    public List<Quotation>? Quotations { get; set; }
 }
diff --git a/PyroFetes/Models/Material.cs b/PyroFetes/Models/Material.cs
index d1ad0a9..224e5d5 100644
--- a/PyroFetes/Models/Material.cs
+++ b/PyroFetes/Models/Material.cs
@@ -9,5 +9,8 @@ public class Material
     [Required] public int Quantity {get; set;}
     
     [Required] public int WarehouseId {get; set;}
-    [Required] public Warehouse? Warehouse {get; set;}
+    public Warehouse? Warehouse {get; set;}
+    
+    public List<ShowMaterial>? ShowMaterials {get; set;}
+    public List<MaterialWarehouse>? MaterialWarehouses {get; set;}
 }
\ No newline at end of file
diff --git a/PyroFetes/Models/MaterialWarehouse.cs b/PyroFetes/Models/MaterialWarehouse.cs
new file mode 100644
index 0000000..6f797b9
--- /dev/null
+++ b/PyroFetes/Models/MaterialWarehouse.cs
@@ -0,0 +1,12 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace PyroFetes.Models;
+
+public class MaterialWarehouse
+{
+    [Required] public int MaterialId { get; set; }
+    [Required] public int WarehouseId { get; set; }
+    
+    public Material? Material { get; set; }
+    public Warehouse? Warehouse { get; set; }
+}
\ No newline at end of file
diff --git a/PyroFetes/Models/Product.cs b/PyroFetes/Models/Product.cs
index 525195a..04c8fc3 100644
--- a/PyroFetes/Models/Product.cs
+++ b/PyroFetes/Models/Product.cs
@@ -36,6 +36,7 @@ namespace PyroFetes.Models
         public List<Price>? Prices { get; set; }
         public List<QuotationProduct>? QuotationProducts { get; set; }
         public List<WarehouseProduct>? WarehouseProducts { get; set; }
+        public List<ProductTimecode>? ProductTimecodes { get; set; }
         
         
     }
diff --git a/PyroFetes/Models/ProductTimecode.cs b/PyroFetes/Models/ProductTimecode.cs
new file mode 100644
index 0000000..a4ad826
--- /dev/null
+++ b/PyroFetes/Models/ProductTimecode.cs
@@ -0,0 +1,17 @@
+using System.ComponentModel.DataAnnotations;
+using Microsoft.EntityFrameworkCore;
+
+namespace PyroFetes.Models;
+
+[PrimaryKey(nameof(ProductId), nameof(ShowId))]
+public class ProductTimecode
+{
+    public Product? Product { get; set; }
+    [Required] public int ProductId { get; set; }
+    
+    public Show? Show { get; set; }
+    [Required] public int ShowId { get; set; }
+    
+    [Required] public decimal Start { get; set; }
+    [Required] public decimal End { get; set; }
+}
\ No newline at end of file
diff --git a/PyroFetes/Models/Quotation.cs b/PyroFetes/Models/Quotation.cs
index f1288ce..569c271 100644
--- a/PyroFetes/Models/Quotation.cs
+++ b/PyroFetes/Models/Quotation.cs
@@ -8,5 +8,8 @@ public class Quotation
     [Required, MaxLength(200)] public string? Message { get; set; }
     [Required, MaxLength(300)] public string? ConditionsSale { get; set; }
     
+    [Required] public int CustomerId { get; set; }
+    public Customer? Customer { get; set; }
+    
     public List<QuotationProduct>? QuotationProducts { get; set; }
 }
\ No newline at end of file
diff --git a/PyroFetes/Models/ServiceProvider.cs b/PyroFetes/Models/ServiceProvider.cs
index 80b101b..b91e0d7 100644
--- a/PyroFetes/Models/ServiceProvider.cs
+++ b/PyroFetes/Models/ServiceProvider.cs
@@ -10,4 +10,7 @@ public class ServiceProvider
     //Relations
     [Required] public int ProviderTypeId { get; set; }
     public ProviderType? ProviderType { get; set; }
+    
+    public List<Contract>? Contracts { get; set; }
+    public List<ContactServiceProvider>? ContactServiceProviders { get; set; }
 }
\ No newline at end of file
diff --git a/PyroFetes/Models/Show.cs b/PyroFetes/Models/Show.cs
index 21514d7..bc425dd 100644
--- a/PyroFetes/Models/Show.cs
+++ b/PyroFetes/Models/Show.cs
@@ -19,4 +19,7 @@ public class Show
     public List<ShowStaff>? ShowStaffs { get; set; }
     public List<ShowTruck>? ShowTrucks { get; set; }
     public List<SoundTimecode>? SoundTimecodes { get; set; }
+    public List<ProductTimecode>? ProductTimecodes { get; set; }
+    public List<Contract>? Contracts { get; set; }
+    public List<ShowMaterial>? ShowMaterials { get; set; }
 }
\ No newline at end of file
diff --git a/PyroFetes/Models/ShowMaterial.cs b/PyroFetes/Models/ShowMaterial.cs
new file mode 100644
index 0000000..81cc82a
--- /dev/null
+++ b/PyroFetes/Models/ShowMaterial.cs
@@ -0,0 +1,15 @@
+using System.ComponentModel.DataAnnotations;
+using Microsoft.EntityFrameworkCore;
+
+namespace PyroFetes.Models;
+
+[PrimaryKey(nameof(ShowId), nameof(MaterialId))]
+public class ShowMaterial
+{
+    [Required] public Show? Show { get; set; }
+    [Required] public int ShowId { get; set; }
+
+    public Material? Material { get; set; }
+    [Required] public int MaterialId { get; set; }
+
+}
\ No newline at end of file
diff --git a/PyroFetes/Models/Warehouse.cs b/PyroFetes/Models/Warehouse.cs
index c91b24e..1307dbc 100644
--- a/PyroFetes/Models/Warehouse.cs
+++ b/PyroFetes/Models/Warehouse.cs
@@ -15,8 +15,7 @@ public class Warehouse
     
     public List<WarehouseProduct>? WarehouseProducts { get; set; }
     
-    
-    public List<Material>? Materials {get; set;}
+    public List<MaterialWarehouse>? MaterialWarehouses {get; set;}
     public List<Movement>? MovementsSource { get; set; }
     public List<Movement>? MovementsDestination { get; set; }
 }
\ No newline at end of file