diff --git a/EntityFramework_LoL/Sources/Business/Business.csproj b/EntityFramework_LoL/Sources/Business/Business.csproj
new file mode 100644
index 0000000..ac52241
--- /dev/null
+++ b/EntityFramework_LoL/Sources/Business/Business.csproj
@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Model\Model.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/EntityFramework_LoL/Sources/Business/DbData.Champions.cs b/EntityFramework_LoL/Sources/Business/DbData.Champions.cs
new file mode 100644
index 0000000..a7bdf5e
--- /dev/null
+++ b/EntityFramework_LoL/Sources/Business/DbData.Champions.cs
@@ -0,0 +1,105 @@
+using Model;
+using Shared;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Business
+{
+    public partial class DbData
+    {
+        public class ChampionsManager : IChampionsManager
+        {
+            private readonly DbData parent;
+
+            public ChampionsManager(DbData parent)
+                => this.parent = parent;
+
+            public Task<Champion?> AddItem(Champion? item)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<bool> DeleteItem(Champion? item)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<Champion?>> GetItems(int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<Champion?>> GetItemsByCharacteristic(string charName, int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<Champion?>> GetItemsByClass(ChampionClass championClass, int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<Champion?>> GetItemsByName(string substring, int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<Champion?>> GetItemsByRunePage(RunePage? runePage, int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<Champion?>> GetItemsBySkill(Skill? skill, int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<Champion?>> GetItemsBySkill(string skill, int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItems()
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItemsByCharacteristic(string charName)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItemsByClass(ChampionClass championClass)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItemsByName(string substring)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItemsByRunePage(RunePage? runePage)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItemsBySkill(Skill? skill)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItemsBySkill(string skill)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<Champion?> UpdateItem(Champion? oldItem, Champion? newItem)
+            {
+                throw new NotImplementedException();
+            }
+        }
+    }
diff --git a/EntityFramework_LoL/Sources/Business/DbData.RunePages.cs b/EntityFramework_LoL/Sources/Business/DbData.RunePages.cs
new file mode 100644
index 0000000..bf1aa5d
--- /dev/null
+++ b/EntityFramework_LoL/Sources/Business/DbData.RunePages.cs
@@ -0,0 +1,75 @@
+using Model;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Business
+{
+    public partial class DbData
+    {
+        public class RunePagesManager : IRunePagesManager
+        {
+            private readonly DbData parent;
+
+            public RunePagesManager(DbData parent)
+                => this.parent = parent;
+
+            public Task<RunePage?> AddItem(RunePage? item)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<bool> DeleteItem(RunePage? item)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<RunePage?>> GetItems(int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<RunePage?>> GetItemsByChampion(Champion? champion, int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<RunePage?>> GetItemsByName(string substring, int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<RunePage?>> GetItemsByRune(Model.Rune? rune, int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItems()
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItemsByChampion(Champion? champion)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItemsByName(string substring)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItemsByRune(Model.Rune? rune)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<RunePage?> UpdateItem(RunePage? oldItem, RunePage? newItem)
+            {
+                throw new NotImplementedException();
+            }
+        }
+    }
+}
diff --git a/EntityFramework_LoL/Sources/Business/DbData.Runes.cs b/EntityFramework_LoL/Sources/Business/DbData.Runes.cs
new file mode 100644
index 0000000..e0e796c
--- /dev/null
+++ b/EntityFramework_LoL/Sources/Business/DbData.Runes.cs
@@ -0,0 +1,65 @@
+using Model;
+using Shared;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Business
+{
+    public partial class DbData
+    {
+        public class RunesManager : IRunesManager
+        {
+            private readonly DbData parent;
+
+            public RunesManager(DbData parent)
+                => this.parent = parent;
+            public Task<Model.Rune?> AddItem(Model.Rune? item)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<bool> DeleteItem(Model.Rune? item)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<Model.Rune?>> GetItems(int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<Model.Rune?>> GetItemsByFamily(RuneFamily family, int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<Model.Rune?>> GetItemsByName(string substring, int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItems()
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItemsByFamily(RuneFamily family)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItemsByName(string substring)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<Model.Rune?> UpdateItem(Model.Rune? oldItem, Model.Rune? newItem)
+            {
+                throw new NotImplementedException();
+            }
+        }
+    }
+}
diff --git a/EntityFramework_LoL/Sources/Business/DbData.Skins.cs b/EntityFramework_LoL/Sources/Business/DbData.Skins.cs
new file mode 100644
index 0000000..7988141
--- /dev/null
+++ b/EntityFramework_LoL/Sources/Business/DbData.Skins.cs
@@ -0,0 +1,65 @@
+using Model;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Business
+{
+    public partial class DbData
+    {
+        public class SkinsManager : ISkinsManager
+        {
+            private readonly DbData parent;
+
+            public SkinsManager(DbData parent)
+                => this.parent = parent;
+
+            public Task<Skin?> AddItem(Skin? item)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<bool> DeleteItem(Skin? item)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<Skin?>> GetItems(int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<Skin?>> GetItemsByChampion(Champion? champion, int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<IEnumerable<Skin?>> GetItemsByName(string substring, int index, int count, string? orderingPropertyName = null, bool descending = false)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItems()
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItemsByChampion(Champion? champion)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<int> GetNbItemsByName(string substring)
+            {
+                throw new NotImplementedException();
+            }
+
+            public Task<Skin?> UpdateItem(Skin? oldItem, Skin? newItem)
+            {
+                throw new NotImplementedException();
+            }
+        }
+    }
+}
diff --git a/EntityFramework_LoL/Sources/Business/DbData.cs b/EntityFramework_LoL/Sources/Business/DbData.cs
new file mode 100644
index 0000000..708039d
--- /dev/null
+++ b/EntityFramework_LoL/Sources/Business/DbData.cs
@@ -0,0 +1,23 @@
+using Model;
+
+namespace Business
+{
+    public partial class DbData : IDataManager
+    {
+
+        public DbData()
+        {
+            ChampionsMgr = new ChampionsManager(this);
+            SkinsMgr = new SkinsManager(this);
+            RunesMgr = new RunesManager(this);
+            RunePagesMgr = new RunePagesManager(this);
+        }
+        public IChampionsManager ChampionsMgr { get; }
+
+        public ISkinsManager SkinsMgr { get; }
+
+        public IRunesManager RunesMgr { get; }
+
+        public IRunePagesManager RunePagesMgr { get; }
+    }
+}
\ No newline at end of file
diff --git a/EntityFramework_LoL/Sources/LeagueOfLegends.sln b/EntityFramework_LoL/Sources/LeagueOfLegends.sln
index 5e32aeb..5abb419 100644
--- a/EntityFramework_LoL/Sources/LeagueOfLegends.sln
+++ b/EntityFramework_LoL/Sources/LeagueOfLegends.sln
@@ -21,7 +21,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DTO", "DTO\DTO.csproj", "{7
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Entity Framework", "Entity Framework", "{BC2FFCA4-3801-433F-A83E-B55345F3B31E}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Entities", "Entities\Entities.csproj", "{C463E2E1-237A-4339-A4C4-6EA3BE7002AE}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Entities", "Entities\Entities.csproj", "{C463E2E1-237A-4339-A4C4-6EA3BE7002AE}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Business", "Business\Business.csproj", "{A447B0BE-62AE-4F66-B887-D1F3D46B0DB3}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -57,6 +59,10 @@ Global
 		{C463E2E1-237A-4339-A4C4-6EA3BE7002AE}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{C463E2E1-237A-4339-A4C4-6EA3BE7002AE}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{C463E2E1-237A-4339-A4C4-6EA3BE7002AE}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A447B0BE-62AE-4F66-B887-D1F3D46B0DB3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A447B0BE-62AE-4F66-B887-D1F3D46B0DB3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A447B0BE-62AE-4F66-B887-D1F3D46B0DB3}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A447B0BE-62AE-4F66-B887-D1F3D46B0DB3}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -65,6 +71,7 @@ Global
 		{1889FA6E-B7C6-416E-8628-9449FB9070B9} = {C76D0C23-1FFA-4963-93CD-E12BD643F030}
 		{B01D7EF2-2D64-409A-A29A-61FB7BB7A9DB} = {2C607793-B163-4731-A4D1-AFE8A7C4C170}
 		{C463E2E1-237A-4339-A4C4-6EA3BE7002AE} = {BC2FFCA4-3801-433F-A83E-B55345F3B31E}
+		{A447B0BE-62AE-4F66-B887-D1F3D46B0DB3} = {BC2FFCA4-3801-433F-A83E-B55345F3B31E}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {92F3083D-793F-4552-8A9A-0AD6534159C9}