diff --git a/presence/DAO/Attedances.cs b/presence/DAO/Attedances.cs
new file mode 100644
index 0000000..a1e7ab3
--- /dev/null
+++ b/presence/DAO/Attedances.cs
@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace presence.DAO
+{
+    internal class Attedances
+    {
+        public DateTime Date { get; set; }
+        public int IdSubjectGroup { get; set; }
+        public int IdStudents {  get; set; }
+        public int IdGroup {  get; set; }
+        public int IdVisit { get; set; }
+    }
+}
diff --git a/presence/DAO/GroupSubjest.cs b/presence/DAO/GroupSubjest.cs
new file mode 100644
index 0000000..89dd7f8
--- /dev/null
+++ b/presence/DAO/GroupSubjest.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace presence.DAO
+{
+    internal class GroupSubjest
+    {
+    }
+}
diff --git a/presence/DAO/Groups.cs b/presence/DAO/Groups.cs
new file mode 100644
index 0000000..1723846
--- /dev/null
+++ b/presence/DAO/Groups.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace presence.DAO
+{
+    internal class Group
+    {
+    }
+}
diff --git a/presence/DAO/Semesters.cs b/presence/DAO/Semesters.cs
new file mode 100644
index 0000000..d4fcad6
--- /dev/null
+++ b/presence/DAO/Semesters.cs
@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace presence.DAO
+{
+    internal class Semesters
+    {
+        public int IdSemester {  get; set; }
+        public DateTime StartTime { get; set; }
+        public DateTime EndTime { get; set; }
+    }
+}
diff --git a/presence/DAO/Students.cs b/presence/DAO/Students.cs
new file mode 100644
index 0000000..4f8c9c1
--- /dev/null
+++ b/presence/DAO/Students.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace presence.DAO
+{
+    internal class Students
+    {
+    }
+}
diff --git a/presence/DAO/Subjects.cs b/presence/DAO/Subjects.cs
new file mode 100644
index 0000000..04e3e9c
--- /dev/null
+++ b/presence/DAO/Subjects.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace presence.DAO
+{
+    internal class Subjects
+    {
+    }
+}
diff --git a/presence/DAO/Visits.cs b/presence/DAO/Visits.cs
new file mode 100644
index 0000000..cf2d474
--- /dev/null
+++ b/presence/DAO/Visits.cs
@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace presence.DAO
+{
+    internal class Visit
+    {
+        public int IdVisit { get; set; }   
+        public string NameVisit { get; set; }
+    }
+}
diff --git a/presence/presence.csproj b/presence/presence.csproj
index fa71b7a..e4cdd76 100644
--- a/presence/presence.csproj
+++ b/presence/presence.csproj
@@ -6,4 +6,18 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.8.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="9.0.0">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.10" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Folder Include="DAO\" />
+  </ItemGroup>
+
 </Project>