Index: Ringtoets/Integration/src/Ringtoets.Integration.Plugin/Handlers/HydraulicBoundaryDatabaseUpdateHandler.cs
===================================================================
diff -u -r60449dd57afa878b9deca929461da09da77ab107 -r02a8a1695a92984aca012bfae7e19e59bd90bbdf
--- Ringtoets/Integration/src/Ringtoets.Integration.Plugin/Handlers/HydraulicBoundaryDatabaseUpdateHandler.cs	(.../HydraulicBoundaryDatabaseUpdateHandler.cs)	(revision 60449dd57afa878b9deca929461da09da77ab107)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Plugin/Handlers/HydraulicBoundaryDatabaseUpdateHandler.cs	(.../HydraulicBoundaryDatabaseUpdateHandler.cs)	(revision 02a8a1695a92984aca012bfae7e19e59bd90bbdf)
@@ -55,7 +55,7 @@
 
         public bool IsConfirmationRequired(HydraulicBoundaryDatabase hydraulicBoundaryDatabase, ReadHydraulicBoundaryDatabase readHydraulicBoundaryDatabase)
         {
-            throw new NotImplementedException();
+            return hydraulicBoundaryDatabase.IsLinked() && hydraulicBoundaryDatabase.Version != readHydraulicBoundaryDatabase.Version;
         }
 
         public bool InquireConfirmation()
Index: Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/Handlers/HydraulicBoundaryDatabaseUpdateHandlerTest.cs
===================================================================
diff -u -r32d96bc10b1f0871512205da08fab72b77c36901 -r02a8a1695a92984aca012bfae7e19e59bd90bbdf
--- Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/Handlers/HydraulicBoundaryDatabaseUpdateHandlerTest.cs	(.../HydraulicBoundaryDatabaseUpdateHandlerTest.cs)	(revision 32d96bc10b1f0871512205da08fab72b77c36901)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/Handlers/HydraulicBoundaryDatabaseUpdateHandlerTest.cs	(.../HydraulicBoundaryDatabaseUpdateHandlerTest.cs)	(revision 02a8a1695a92984aca012bfae7e19e59bd90bbdf)
@@ -22,6 +22,8 @@
 using System;
 using NUnit.Framework;
 using Ringtoets.Common.Data.AssessmentSection;
+using Ringtoets.Common.Data.Hydraulics;
+using Ringtoets.HydraRing.IO.TestUtil;
 using Ringtoets.Integration.Data;
 using Ringtoets.Integration.IO.Handlers;
 using Ringtoets.Integration.Plugin.Handlers;
@@ -52,5 +54,54 @@
             // Assert
             Assert.IsInstanceOf<IHydraulicBoundaryDatabaseUpdateHandler>(handler);
         }
+
+        [Test]
+        public void IsConfirmationRequired_HydraulicBoundaryDatabaseNotLinked_ReturnsFalse()
+        {
+            // Setup
+            var handler = new HydraulicBoundaryDatabaseUpdateHandler(new AssessmentSection(AssessmentSectionComposition.Dike));
+            
+            // Call
+            bool confirmationRequired = handler.IsConfirmationRequired(new HydraulicBoundaryDatabase(), ReadHydraulicBoundaryDatabaseTestFactory.Create());
+
+            // Assert
+            Assert.IsFalse(confirmationRequired);
+        }
+
+        [Test]
+        public void IsConfirmationRequired_HydraulicBoundaryDatabaseLinkedAndReadDatabaseSameVersion_ReturnsFalse()
+        {
+            // Setup
+            var handler = new HydraulicBoundaryDatabaseUpdateHandler(new AssessmentSection(AssessmentSectionComposition.Dike));
+            var database = new HydraulicBoundaryDatabase
+            {
+                FilePath = "some/file/path",
+                Version = "version"
+            };
+
+            // Call
+            bool confirmationRequired = handler.IsConfirmationRequired(database, ReadHydraulicBoundaryDatabaseTestFactory.Create());
+
+            // Assert
+            Assert.IsFalse(confirmationRequired);
+        }
+
+        [Test]
+        public void IsConfirmationRequired_HydraulicBoundaryDatabaseLinkedAndReadDatabaseDifferentVersion_ReturnsTrue()
+        {
+            // Setup
+            var handler = new HydraulicBoundaryDatabaseUpdateHandler(new AssessmentSection(AssessmentSectionComposition.Dike));
+            var database = new HydraulicBoundaryDatabase
+            {
+                FilePath = "some/file/path",
+                Version = "1"
+            };
+
+            // Call
+            bool confirmationRequired = handler.IsConfirmationRequired(database, ReadHydraulicBoundaryDatabaseTestFactory.Create());
+
+            // Assert
+            Assert.IsTrue(confirmationRequired);
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/Ringtoets.Integration.Plugin.Test.csproj
===================================================================
diff -u -r86a5dffc85f49d16ee1891862fc0e4f40175797a -r02a8a1695a92984aca012bfae7e19e59bd90bbdf
--- Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/Ringtoets.Integration.Plugin.Test.csproj	(.../Ringtoets.Integration.Plugin.Test.csproj)	(revision 86a5dffc85f49d16ee1891862fc0e4f40175797a)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/Ringtoets.Integration.Plugin.Test.csproj	(.../Ringtoets.Integration.Plugin.Test.csproj)	(revision 02a8a1695a92984aca012bfae7e19e59bd90bbdf)
@@ -343,10 +343,18 @@
       <Project>{888D4097-8BC2-4703-9FB1-8744C94D525E}</Project>
       <Name>Ringtoets.HydraRing.Calculation</Name>
     </ProjectReference>
+    <ProjectReference Include="..\..\..\HydraRing\src\Ringtoets.HydraRing.IO\Ringtoets.HydraRing.IO.csproj">
+      <Project>{b69d5b6c-6e14-4fa9-9ebc-8f97678cdb70}</Project>
+      <Name>Ringtoets.HydraRing.IO</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\HydraRing\test\Ringtoets.HydraRing.Calculation.TestUtil\Ringtoets.HydraRing.Calculation.TestUtil.csproj">
       <Project>{74CBA865-9338-447F-BAD9-28312446AE84}</Project>
       <Name>Ringtoets.HydraRing.Calculation.TestUtil</Name>
     </ProjectReference>
+    <ProjectReference Include="..\..\..\HydraRing\test\Ringtoets.HydraRing.IO.TestUtil\Ringtoets.HydraRing.IO.TestUtil.csproj">
+      <Project>{7FB79768-1A8B-41CA-9614-8EC6C3C79482}</Project>
+      <Name>Ringtoets.HydraRing.IO.TestUtil</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\MacroStabilityInwards\src\Ringtoets.MacroStabilityInwards.Data\Ringtoets.MacroStabilityInwards.Data.csproj">
       <Project>{83d6b73e-91d5-46b0-9218-955da1f75f7c}</Project>
       <Name>Ringtoets.MacroStabilityInwards.Data</Name>