diff --git a/src/ezic.app.src b/src/ezic.app.src
index f2cf744..2f54ff1 100644
--- a/src/ezic.app.src
+++ b/src/ezic.app.src
@@ -1,11 +1,11 @@
 {application, ezic,
  [
   {registered, []},
-  {vsn, "0.1.0"},
+  {vsn, "0.2.0"},
   {applications, [
                   kernel,       
                   stdlib
                  ]},
-  {mod, {ezic_app, []}},
+  {mod, {ezic_app, ezic_db_ets}},
   {env, [{db_dir, "db"}]}
  ]}.
\ No newline at end of file
diff --git a/src/ezic_db.erl b/src/ezic_db.erl
index bc8018c..0d18006 100644
--- a/src/ezic_db.erl
+++ b/src/ezic_db.erl
@@ -14,10 +14,11 @@
 	 , insert_all/1
 	 , wipe/1
 	 , flatten/0
+	 , get_implementation/0
 	]).
 
 -export([
-	 start_link/0
+	 start_link/1
 	 , init/1
 	 , code_change/3
 	 , handle_call/3
@@ -27,6 +28,8 @@
 	 ]).
 
 
+-record(state, {zones, rules, get_all, flatzone, insert_all, wipe, implementation}).
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 % PUBLIC API
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -63,18 +66,38 @@ wipe(Tab) ->
 flatten() ->
     gen_server:call(?MODULE, {flatten}).
 
+get_implementation() ->
+    gen_server:call(?MODULE, {implementation}).
+
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% GEN_SERVER 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
-start_link() ->
-    gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).
+start_link(StartArgs) ->
+    gen_server:start_link({local, ?MODULE}, ?MODULE, StartArgs, []).
 
+init(ezic_db_mnesia) ->
+    ezic_db_mnesia:init(),
+    State = #state{zones = fun ezic_db_mnesia:zones/1,
+		   rules = fun ezic_db_mnesia:rules/1,
+		   get_all = fun ezic_db_mnesia:get_all/1,
+		   flatzone = fun ezic_db_mnesia:flatzone/2,
+		   insert_all = fun ezic_db_mnesia:insert_all/1,
+		   wipe = fun ezic_db_mnesia:wipe/1,
+		   implementation = "mnesia"},
+    {ok, State};
 init(_) ->
     ezic_db_ets:init(),
-    {ok, []}.
+    State = #state{zones = fun ezic_db_ets:zones/1,
+		   rules = fun ezic_db_ets:rules/1,
+		   get_all = fun ezic_db_ets:get_all/1,
+		   flatzone = fun ezic_db_ets:flatzone/2,
+		   insert_all = fun ezic_db_ets:insert_all/1,
+		   wipe = fun ezic_db_ets:wipe/1,
+		   implementation = "ets"},
+    {ok, State}.
 
 %%~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 %% DB Lookup
@@ -82,29 +105,39 @@ init(_) ->
 
 
 handle_call({zones, Name}, _, State) ->
-    Matches= ezic_db_ets:zones(Name),
+    ZoneFun= State#state.zones,
+    Matches= ZoneFun(Name),
     {reply, Matches, State};
 handle_call({rules, Name}, _, State) ->
-    Matches= ezic_db_ets:rules(Name),
+    RuleFun= State#state.rules,
+    Matches= RuleFun(Name),
     {reply, Matches, State};
 handle_call({all, Tab}, _, State) ->
-    Matches= ezic_db_ets:get_all(Tab),
+    GetAllFun= State#state.get_all,
+    Matches= GetAllFun(Tab),
     {reply, Matches, State};
 handle_call({flatzone, Date, Name}, _, State) ->
-    Result= ezic_db_ets:flatzone(Date, Name),
+    FlatzoneFun= State#state.flatzone,
+    Result= FlatzoneFun(Date, Name),
     {reply, Result, State};
 handle_call({insert_all, Records}, _, State) ->
-    ezic_db_ets:insert_all(Records),
+    InsertAllFun= State#state.insert_all,
+    InsertAllFun(Records),
     {noreply, State};
 handle_call({wipe, Tab}, _, State) ->
-    Result= ezic_db_ets:wipe(Tab),
+    WipeFun= State#state.wipe,
+    Result= WipeFun(Tab),
     {reply, Result, State};
 handle_call({flatten}, _, State) ->
-    Zones= ezic_db_ets:get_all(zone),
-    Rules= ezic_db_ets:get_all(rule),
+    GetAllFun= State#state.get_all,
+    Zones= GetAllFun(zone),
+    Rules= GetAllFun(rule),
     FlatZone= ezic_flatten:flatten(Zones, Rules),
-    Result= ezic_db_ets:insert_all(FlatZone),
+    InsertAllFun= State#state.insert_all,
+    Result= InsertAllFun(FlatZone),
     {reply, Result, State};
+handle_call({implementation}, _, State) ->
+    {reply, State#state.implementation, State};
 handle_call(_, _, State) ->
     {noreply, State}.
 
diff --git a/src/ezic_db_mnesia.erl b/src/ezic_db_mnesia.erl
index 1c64b1a..8169f75 100644
--- a/src/ezic_db_mnesia.erl
+++ b/src/ezic_db_mnesia.erl
@@ -127,6 +127,7 @@ create_tabs(ok) ->
     insert_all(Zones),
     insert_all(Rules),
     FlatZones = ezic_flatten:flatten(Zones, Rules),
+    io:format("~p~n", [FlatZones]),
     insert_all(FlatZones),
 
     ok;
diff --git a/src/ezic_flatten.erl b/src/ezic_flatten.erl
index e25656c..56a66e1 100644
--- a/src/ezic_flatten.erl
+++ b/src/ezic_flatten.erl
@@ -143,7 +143,7 @@ flatten_zone_set(FromTimeStub=#flatzone{utc_from=UTCFrom, dstoffset=DSTOffset}
 
     %% we gather all rules that _may_ apply
     %Rules= ezic_db:rules(RuleName),
-    Rules= [R || R <- AllRules, R = #rule{name = RuleName}],
+    Rules= [R || R <- AllRules, R#rule.name =:= RuleName ],
     
     ?debugVal(FromTime),
     ?debugVal(Rules),
diff --git a/src/ezic_sup.erl b/src/ezic_sup.erl
index b1c9542..23f23de 100644
--- a/src/ezic_sup.erl
+++ b/src/ezic_sup.erl
@@ -24,8 +24,8 @@
 %% Function: start_link() -> {ok,Pid} | ignore | {error,Error}
 %% Description: Starts the supervisor
 %%--------------------------------------------------------------------
-start_link(_) ->
-    supervisor:start_link(?MODULE, []).
+start_link(StartArgs) ->
+    supervisor:start_link(?MODULE, StartArgs).
 
 %%====================================================================
 %% Supervisor callbacks
@@ -39,9 +39,9 @@ start_link(_) ->
 %% to find out about restart strategy, maximum restart frequency and child 
 %% specifications.
 %%--------------------------------------------------------------------
-init(_) ->
-    EzicDb = {ezic_db,{ezic_db, start_link, []},
-	      permanent,2000,worker,[ezic_db_ets]},
+init(StartArgs) ->
+    EzicDb = {ezic_db,{ezic_db, start_link, [StartArgs]},
+	      permanent,2000,worker,[ezic_db]},
     {ok,{{one_for_all,3,30}, [EzicDb]}}.
 
 %%====================================================================