Index: Ringtoets/Integration/src/Ringtoets.Integration.IO/Handlers/IHydraulicBoundaryDatabaseUpdateHandler.cs
===================================================================
diff -u
--- Ringtoets/Integration/src/Ringtoets.Integration.IO/Handlers/IHydraulicBoundaryDatabaseUpdateHandler.cs	(revision 0)
+++ Ringtoets/Integration/src/Ringtoets.Integration.IO/Handlers/IHydraulicBoundaryDatabaseUpdateHandler.cs	(revision e0ef595a605d8f3c5ed9abf7b5e1b149976bb892)
@@ -0,0 +1,60 @@
+// Copyright (C) Stichting Deltares 2018. All rights reserved.
+//
+// This file is part of Ringtoets.
+//
+// Ringtoets is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System.Collections.Generic;
+using Core.Common.Base;
+using Ringtoets.Common.Data.Hydraulics;
+using Ringtoets.Common.IO.FileImporters;
+
+namespace Ringtoets.Integration.IO.Handlers
+{
+    /// <summary>
+    /// Interface for an object that can properly update a <see cref="HydraulicBoundaryDatabase"/>.
+    /// </summary>
+    public interface IHydraulicBoundaryDatabaseUpdateHandler
+    {
+        /// <summary>
+        /// Checks whether confirmation is required before updating the <see cref="HydraulicBoundaryDatabase"/>.
+        /// </summary>
+        /// <param name="readHydraulicBoundaryDatabase">The read hydraulic boundary database.</param>
+        /// <returns><c>true</c> when confirmation is required; <c>false</c> otherwise.</returns>
+        bool IsConfirmationRequired(ReadHydraulicBoundaryDatabase readHydraulicBoundaryDatabase);
+
+        /// <summary>
+        /// Gets confirmation for updating the <see cref="HydraulicBoundaryDatabase"/>.
+        /// </summary>
+        /// <returns><c>true</c> when confirmation is given; <c>false</c> otherwise.</returns>
+        bool InquireConfirmation();
+
+        /// <summary>
+        /// Updates the <see cref="HydraulicBoundaryDatabase"/> and its dependent data with the
+        /// <paramref name="readHydraulicBoundaryDatabase"/>
+        /// </summary>
+        /// <param name="readHydraulicBoundaryDatabase">The read data to update with.</param>
+        /// <returns>All objects that have been affected by the update.</returns>
+        IEnumerable<IObservable> Update(ReadHydraulicBoundaryDatabase readHydraulicBoundaryDatabase);
+
+        /// <summary>
+        /// Perform post-update actions.
+        /// </summary>
+        void DoPostUpdateActions();
+    }
+}
\ No newline at end of file
Index: Ringtoets/Integration/src/Ringtoets.Integration.IO/Ringtoets.Integration.IO.csproj
===================================================================
diff -u -r0da50a9b9eb54ee983bfd56367cbbf1ddcc1b887 -re0ef595a605d8f3c5ed9abf7b5e1b149976bb892
--- Ringtoets/Integration/src/Ringtoets.Integration.IO/Ringtoets.Integration.IO.csproj	(.../Ringtoets.Integration.IO.csproj)	(revision 0da50a9b9eb54ee983bfd56367cbbf1ddcc1b887)
+++ Ringtoets/Integration/src/Ringtoets.Integration.IO/Ringtoets.Integration.IO.csproj	(.../Ringtoets.Integration.IO.csproj)	(revision e0ef595a605d8f3c5ed9abf7b5e1b149976bb892)
@@ -85,6 +85,7 @@
     <Compile Include="Factories\ExportableTechnicalInnovationFailureMechanismFactory.cs" />
     <Compile Include="Factories\ExportableWaterPressureAsphaltCoverFailureMechanismFactory.cs" />
     <Compile Include="Factories\ExportableWaveImpactAsphaltCoverFailureMechanismFactory.cs" />
+    <Compile Include="Handlers\IHydraulicBoundaryDatabaseUpdateHandler.cs" />
     <Compile Include="Helpers\ExportableFailureMechanismSectionHelper.cs" />
     <Compile Include="Helpers\IdentifierGenerator.cs" />
     <Compile Include="Importers\HydraulicBoundaryDatabaseImporter.cs" />