diff --git a/GBase/Factories/IGBaseColumnFactory.cs b/GBase/Factories/IGBaseColumnFactory.cs
index 9d133e6..94f6866 100644
--- a/GBase/Factories/IGBaseColumnFactory.cs
+++ b/GBase/Factories/IGBaseColumnFactory.cs
@@ -17,6 +17,6 @@ namespace GBase.Factories
         /// Creates an <see cref="IGBaseColumn"/>
         /// </summary>
         /// <returns>A newly created instance of the implementation for <see cref="IGBaseColumn"/></returns>
-        IGBaseColumn Create(string name, Type type);
+        IGBaseColumn Create(string name, Type type, bool isKey);
     }
 }
\ No newline at end of file
diff --git a/GBase/GBaseColumn.cs b/GBase/GBaseColumn.cs
index fd8587e..6f77de0 100644
--- a/GBase/GBaseColumn.cs
+++ b/GBase/GBaseColumn.cs
@@ -16,14 +16,16 @@ namespace GBase
         /// <summary>
         /// A column of a <see cref="IGBaseTable"/>
         /// </summary>
-        public GBaseColumn(string name, Type type)
+        public GBaseColumn(string name, Type type, bool isKey)
         {
             Name = name;
             Type = type;
+            IsKey = isKey;
         }
         
         public string Name { get; }
         public Type Type { get; }
+        public bool IsKey { get; }
 
         /// <summary>
         /// The <see cref="IAsyncDisposable.DisposeAsync"/> method
diff --git a/GBase/Interfaces/IGBaseColumn.cs b/GBase/Interfaces/IGBaseColumn.cs
index 0292153..a6687cf 100644
--- a/GBase/Interfaces/IGBaseColumn.cs
+++ b/GBase/Interfaces/IGBaseColumn.cs
@@ -13,5 +13,6 @@ namespace GBase.Interfaces
     {
         string Name { get; }
         Type Type { get; }
+        bool IsKey { get; }
     }
 }
\ No newline at end of file