class DataBaseAlreadyOpen implements Exception {}

class UnableToGetDocumentsDirecotory implements Exception {}

class DatabaseNotOpen implements Exception {}

class CouldNotDelete implements Exception {}

class UserAlreadyExist implements Exception {}

class CouldNotFindUser implements Exception {}

class CouldNotDeleteNote implements Exception {}

class CouldNotFindNote implements Exception {}

class CouldNotUpdateNote implements Exception {}

class UserShouldBeSetBeforeReadingAllNotes implements Exception {}
