diff --git a/PyroFetes/Models/Movement.cs b/PyroFetes/Models/Movement.cs
index b7cf0da..ec47c22 100644
--- a/PyroFetes/Models/Movement.cs
+++ b/PyroFetes/Models/Movement.cs
@@ -11,9 +11,9 @@ public class Movement
     [Required] public int Quantity {get; set;}
     
     public List<Product>? Products { get; set; }
+   
     public int? SourceWarehouseId {get; set;}
     public Warehouse? SourceWarehouse {get; set;}
-    
     public int? DestinationWarehouseId {get; set;}
     public Warehouse? DestinationWarehouse {get; set;}
 }
\ No newline at end of file
diff --git a/PyroFetes/Models/Show.cs b/PyroFetes/Models/Show.cs
index 29616e5..21514d7 100644
--- a/PyroFetes/Models/Show.cs
+++ b/PyroFetes/Models/Show.cs
@@ -5,20 +5,18 @@ namespace PyroFetes.Models;
 public class Show
 {
     [Key] public int Id { get; set; }
-    [Required] public string? Name { get; set; }
+    [Required, MaxLength(100)] public string? Name { get; set; }
     [Required, MaxLength(120)] public string? Place { get; set; }
     [MaxLength(500)] public string? Description { get; set; }
+    public DateOnly? Date { get; set; }
     
     // Link (path/URL/file name) to the pyrotechnic implementation plan
     [Required, MaxLength(500)] public string? PyrotechnicImplementationPlan { get; set; }
     
-    public DateOnly? Date { get; set; }
-    
     [Required] public int CityId { get; set; }
     public City? City { get; set; }
     
-    public ICollection<Staff>? Staff { get; set; }
-    public ICollection<Truck>? Trucks { get; set; }
-    
+    public List<ShowStaff>? ShowStaffs { get; set; }
+    public List<ShowTruck>? ShowTrucks { get; set; }
     public List<SoundTimecode>? SoundTimecodes { get; set; }
 }
\ No newline at end of file
diff --git a/PyroFetes/Models/ShowStaff.cs b/PyroFetes/Models/ShowStaff.cs
new file mode 100644
index 0000000..60a7215
--- /dev/null
+++ b/PyroFetes/Models/ShowStaff.cs
@@ -0,0 +1,14 @@
+using System.ComponentModel.DataAnnotations;
+using Microsoft.EntityFrameworkCore;
+
+namespace PyroFetes.Models;
+
+[PrimaryKey(nameof(StaffId), nameof(ShowId))]
+public class ShowStaff
+{
+    public Staff? Staff { get; set; }
+    [Required] public int StaffId { get; set; }
+
+    public Show? Show { get; set; }
+    [Required] public int ShowId { get; set; }
+}
\ No newline at end of file
diff --git a/PyroFetes/Models/ShowTruck.cs b/PyroFetes/Models/ShowTruck.cs
new file mode 100644
index 0000000..9f39f8a
--- /dev/null
+++ b/PyroFetes/Models/ShowTruck.cs
@@ -0,0 +1,14 @@
+using System.ComponentModel.DataAnnotations;
+using Microsoft.EntityFrameworkCore;
+
+namespace PyroFetes.Models;
+
+[PrimaryKey(nameof(ShowId), nameof(TruckId))]
+public class ShowTruck
+{
+    public Show? Show { get; set; }
+    [Required] public int ShowId { get; set; }
+
+    public Truck? Truck { get; set; }
+    [Required] public int TruckId { get; set; }
+}
\ No newline at end of file
diff --git a/PyroFetes/Models/Staff.cs b/PyroFetes/Models/Staff.cs
index 670adef..e95f08b 100644
--- a/PyroFetes/Models/Staff.cs
+++ b/PyroFetes/Models/Staff.cs
@@ -9,7 +9,8 @@ public class Staff
     [Required, MaxLength(60)] public string LastName { get; set; } = null!;
     [Required, MaxLength(100)] public string? Profession { get; set; }
     [Required, MaxLength(120)] public string? Email { get; set; }
-    [Required] public string? F4T2NumberApproval { get; set; }
+    [Required, MaxLength(100)] public string? F4T2NumberApproval { get; set; }
     [Required] public DateOnly F4T2ExpirationDate { get; set; }
-    public ICollection<Show>? Shows { get; set; }
+    
+    public List<ShowStaff>? ShowStaffs { get; set; }
 }
\ No newline at end of file
diff --git a/PyroFetes/Models/Truck.cs b/PyroFetes/Models/Truck.cs
index b0a55f8..91794a9 100644
--- a/PyroFetes/Models/Truck.cs
+++ b/PyroFetes/Models/Truck.cs
@@ -6,9 +6,9 @@ public class Truck
 {
     [Key] public int Id { get; set; }
     [Required, MaxLength(40)] public string Type { get; set; } = null!;
-    [Range(0, double.MaxValue)] public double? MaxExplosiveCapacity { get; set; }
+    [Required] public double? MaxExplosiveCapacity { get; set; }
     [Required, MaxLength(80)] public string? Sizes { get; set; }
     [Required, MaxLength(40)] public string? Status { get; set; }
-    [Required] public int ShowId { get; set; }
-    public Show? Show { get; set; }
+    
+    public List<ShowTruck>? ShowTrucks { get; set; }
 }
\ No newline at end of file
diff --git a/PyroFetes/Models/Warehouse.cs b/PyroFetes/Models/Warehouse.cs
index 4a69d2d..c91b24e 100644
--- a/PyroFetes/Models/Warehouse.cs
+++ b/PyroFetes/Models/Warehouse.cs
@@ -14,6 +14,8 @@ public class Warehouse
     [Required, MaxLength(100)] public string? City { get; set; }
     
     public List<WarehouseProduct>? WarehouseProducts { get; set; }
+    
+    
     public List<Material>? Materials {get; set;}
     public List<Movement>? MovementsSource { get; set; }
     public List<Movement>? MovementsDestination { get; set; }