--- /dev/null
+////////////////////////////////////////////////////////////////////////////
+//
+// Copyright 2014 Realm Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+////////////////////////////////////////////////////////////////////////////
+
+#import <Realm/RLMConstants.h>
+
+RLMNotification const RLMRealmRefreshRequiredNotification = @"RLMRealmRefreshRequiredNotification";
+RLMNotification const RLMRealmDidChangeNotification = @"RLMRealmDidChangeNotification";
+
+NSString * const RLMErrorDomain = @"io.realm";
+
+NSString * const RLMUnknownSystemErrorDomain = @"io.realm.unknown";
+
+NSString * const RLMExceptionName = @"RLMException";
+
+NSString * const RLMRealmVersionKey = @"RLMRealmVersion";
+
+NSString * const RLMRealmCoreVersionKey = @"RLMRealmCoreVersion";
+
+NSString * const RLMInvalidatedKey = @"invalidated";
+
+NSString * const RLMBackupRealmConfigurationErrorKey = @"RLMBackupRealmConfiguration";