diff --git a/src/Database.cpp b/src/Database.cpp
index 1cedee2f..0ba330ad 100644
--- a/src/Database.cpp
+++ b/src/Database.cpp
@@ -60,6 +60,16 @@ void Database::initialize (const std::string& location)
   // TODO If there is no data file named YYYY—MM.data, then create it.
 }
 
+////////////////////////////////////////////////////////////////////////////////
+void Database::commit ()
+{
+  if (_dirty)
+  {
+
+    _dirty = false;
+  }
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 Interval Database::getLatestInterval () const
 {
@@ -70,18 +80,21 @@ Interval Database::getLatestInterval () const
 void Database::addExclusion (const std::string& exclusion)
 {
   _files[0].addExclusion (exclusion);
+  _dirty = true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 void Database::addInterval (const Interval& interval)
 {
   _files[0].addInterval (interval);
+  _dirty = true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 void Database::modifyInterval (const Interval& interval)
 {
   _files[0].modifyInterval (interval);
+  _dirty = true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -94,6 +107,8 @@ std::string Database::dump () const
         << (file.name () == _current ? " (current)" : "")
         << "\n";
 
+  out << "  Dirty: " << (_dirty ? "true" : "false") << "\n";
+
   return out.str ();
 }
 
diff --git a/src/Database.h b/src/Database.h
index 1f4902ae..f9cb9383 100644
--- a/src/Database.h
+++ b/src/Database.h
@@ -37,6 +37,7 @@ class Database
 public:
   Database () = default;
   void initialize (const std::string&);
+  void commit ();
 
   Interval getLatestInterval () const;
 
@@ -53,6 +54,7 @@ private:
   std::string            _location   {"~/.timewarrior/data"};
   std::string            _current    {};
   std::vector <Datafile> _files      {};
+  bool                   _dirty      {false};
 };
 
 #endif