anchor.diff:      set_entry_(State, Entry).
   
   %% @doc Removes all values with the given entry's key from the DB.
  -delete_entry_(State = {DB, _Subscr}, Entry) ->
  +delete_entry_(State, Entry) ->
       Key = db_entry:get_key(Entry),
  +    delete_entry_at_key(State, Key).
  +
  +delete_entry_at_key(State = {DB, _Subscr}, Key) ->
       ets:delete(DB, Key),
       call_subscribers(State, {delete, Key}),
       State.
  
positive.code: -type db_t() :: {Table::tid() | atom(), SubscrTable::tid() | atom()}.
  
  % TODO: move these functions to the behaviour and implement them in the other DBs!
  -export([get_chunk/3, delete_chunk/3, get_split_key/4]).
  
  % Note: must include db_beh.hrl AFTER the type definitions for erlang < R13B04
  % to work.
  
negative.code:                     {intervals:empty(), []};
                  FirstKey ->
                      %ct:pal("first key: ~.0p~n", [FirstKey]),
                      FirstEntry = get_entry_(DB, FirstKey),
                      Chunk0 = case FilterFun(FirstEntry) of
                                   true -> [ValueFun(FirstEntry)];
                                   _    -> []
                               end,
                      {Next, Chunk} =
                          get_chunk_inner(DB, ets:next(ETSDB, FirstKey), FirstKey,
                                          Interval, FilterFun, ValueFun, ChunkSize - 1, Chunk0),
                      case Next of
                          '$end_of_table' ->
                              {intervals:empty(), Chunk};
  