--- a/PostgreSQL/Plugins/PostgreSQLIndex.h	Thu Jan 03 14:04:46 2019 +0100
+++ b/PostgreSQL/Plugins/PostgreSQLIndex.h	Fri Jan 04 13:51:52 2019 +0100
@@ -72,5 +72,18 @@
 
     virtual int64_t CreateResource(const char* publicId,
                                    OrthancPluginResourceType type);
+
+    virtual bool HasCreateInstance() const
+    {
+      return true;
+    }
+
+#if ORTHANC_PLUGINS_HAS_DATABASE_CONSTRAINT == 1
+    virtual void CreateInstance(OrthancPluginCreateInstanceResult& result,
+                                const char* hashPatient,
+                                const char* hashStudy,
+                                const char* hashSeries,
+                                const char* hashInstance);
+#endif
   };
 }