Adding database models

WD7UVN_HFT_2023241.Models/Class1.cs

@@ -1,8 +0,0 @@
-using System;
-
-namespace WD7UVN_HFT_2023241.Models
-{
-    public class Class1
-    {
-    }
-}

WD7UVN_HFT_2023241.Models/Customer.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WD7UVN_HFT_2023241.Models
+{
+    internal class Customer
+    {
+        public int ID { get; set; }
+        public string NAME { get; set; }
+        public string EMAIL { get; set; }
+        public string PHONE { get; set; }
+        public int SERVICE_ID { get; set; }
+    }
+}

WD7UVN_HFT_2023241.Models/Employee.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WD7UVN_HFT_2023241.Models
+{
+    internal class Employee
+    {
+        public int ID { get; set; }
+        public string NAME { get; set; }
+        public string EMAIL { get; set; }
+        public string PHONE { get; set; }
+        public int MAINTAINER_ID { get; set; }
+        public int MANAGER { get; set; }
+    }
+}

WD7UVN_HFT_2023241.Models/MaintainerTeam.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace WD7UVN_HFT_2023241.Models
+{
+    public class MaintainerTeam
+    {
+        public int ID {  get; set; }
+        public string NAME { get; set; }
+        public string EMAIL { get; set; }
+        public int LEADER_EMPLOYEE_ID { get; set; }
+    }
+}

WD7UVN_HFT_2023241.Models/Service.cs

@@ -0,0 +1,15 @@
+namespace WD7UVN_HFT_2023241.Models
+{
+    internal class Service
+    {
+        public int ID { get; set; }
+        public int MAINTAINER { get; set; }
+        public string NAME { get; set; }
+        public int? VERSION { get; set; }
+        public string? ACCOUNT { get; set; }
+        public string? NOTES { get; set; }
+        public string? SERVICE_DOMAIN { get; set; }
+        public string? IP { get; set; }
+        public int? PORT { get; set; }
+    }
+}