diff --git a/drop_9.sql b/drop_9.sql
index 41c3920..127a524 100644
--- a/drop_9.sql
+++ b/drop_9.sql
@@ -1,3 +1,5 @@
+
+
 ALTER TABLE statistics 
 DROP CONSTRAINT ck_game_WLD;
 
@@ -34,30 +36,30 @@ DROP CONSTRAINT ck_player_name;
 --foreign key 
 
 ALTER TABLE game_participants
-DROP FOREIGN KEY game_id
-DROP FOREIGN KEY tournament_participants;
+DROP CONSTRAINT game_id
+DROP CONSTRAINT tournament_participants;
 
 ALTER TABLE statistics 
-DROP FOREIGN KEY fk_statistics;
+DROP CONSTRAINT fk_statistics;
 
 ALTER TABLE games
-DROP FOREIGN KEY fk_games;
+DROP CONSTRAINT fk_games;
 
 ALTER TABLE prizes 
-DROP FOREIGN KEY tournament_id
-DROP FOREIGN KEY sponsor_id;
+DROP CONSTRAINT tournament_id
+DROP CONSTRAINT sponsor_id;
 
 ALTER TABLE tournament_participants
-DROP FOREIGN KEY team_id
-DROP FOREIGN KEY player_id
-DROP FOREIGN KEY tournament_id;
+DROP CONSTRAINT team_id
+DROP CONSTRAINT player_id
+DROP CONSTRAINT tournament_id;
 
 ALTER TABLE tournaments
-DROP FOREIGN KEY genre_id;
+DROP CONSTRAINT genre_id;
 
 ALTER TABLE team_players
-DROP FOREIGN KEY team_id
-DROP FOREIGN KEY player_id
+DROP CONSTRAINT team_id
+DROP CONSTRAINT player_id
 
 
 --unique
@@ -68,117 +70,117 @@ ALTER TABLE players
 DROP UNIQUE(contact_email)
 DROP UNIQUE(contact_number);
 
---Primary key
+--CONSTRAINT
 ALTER TABLE game_participants
-DROP PRIMARY KEY game_participant_id;
+DROP CONSTRAINT game_participant_id;
 
 ALTER TABLE statistics
-DROP PRIMARY KEY game_result_id;
+DROP CONSTRAINT game_result_id;
 
 ALTER TABLE games 
 DROP TABLE game_id;
 
 ALTER TABLE rounds 
-DROP PRIMARY KEY round_id;
+DROP CONSTRAINT round_id;
 
 ALTER TABLE prizes
-DROP PRIMARY KEY prize_id;
+DROP CONSTRAINT prize_id;
 
 ALTER TABLE sponsors
-DROP PRIMARY KEY sponsor_id;
+DROP CONSTRAINT sponsor_id;
 
 ALTER TABLE tournament_participants
-DROP PRIMARY KEY tournament_participant_id;
+DROP CONSTRAINT tournament_participant_id;
 
 ALTER TABLE tournaments
-DROP PRIMARY KEY tournament_id;
+DROP CONSTRAINT tournament_id;
 
 ALTER TABLE categories 
-DROP PRIMARY KEY genre_id;
+DROP CONSTRAINT genre_id;
 
 ALTER TABLE team_players
-DROP PRIMARY KEY team_player_id;
+DROP CONSTRAINT team_player_id;
 
 ALTER TABLE teams
-DROP PRIMARY KEY team_id;
+DROP CONSTRAINT team_id;
 
 ALTER TABLE players
-DROP PRIMARY KEY player_id;
+DROP CONSTRAINT player_id;
 
 --Sequence 
 
 
-ALTER TABLE game_participants
+
 DROP SEQUENCE seq_game_participants;
 
-ALTER TABLE statistics
+
 DROP SEQUENCE seq_statistics;
 
-ALTER TABLE games
+
 DROP SEQUENCE seq_games;
 
-ALTER TABLE rounds
+
 DROP SEQUENCE seq_rounds;
 
 
-ALTER TABLE prizes
+
 DROP SEQUENCE seq_prizes;
 
-ALTER TABLE sponsors
+
 DROP SEQUENCE seq_sponsors;
 
-ALTER TABLE tournament_participants
+
 DROP SEQUENCE seq_tournament_participants;
 
-ALTER TABLE tournaments
+
 DROP SEQUENCE seq_tournament;
 
-ALTER TABLE categories
+
 DROP SEQUENCE seq_categories;
 
-ALTER TABLE team_players
+
 DROP SEQUENCE seq_team_players;
 
-ALTER TABLE teams
+
 DROP SEQUENCE seq_teams;
 
-ALTER TABLE players
+
 DROP SEQUENCE seq_players;
 
 -- Tables 
 
 ALTER TABLE game_participants
-DROP TABLE game_participants;
+DROP TABLE game_participants PURGE;
 
 ALTER TABLE statistics
-DROP TABLE statistics; 
+DROP TABLE statistics PURGE; 
 
 ALTER TABLE games
-DROP TABLE games;
+DROP TABLE games PURGE;
 
 ALTER TABLE rounds
-DROP TABLE rounds;
+DROP TABLE rounds PURGE;
 
 ALTER TABLE prizes
-DROP TABLE prizes;
+DROP TABLE prizes PURGE;
 
 ALTER TABLE sponsors
-DROP TABLE sponsors;
+DROP TABLE sponsors PURGE;
 
 ALTER TABLE tournament_participants
-DROP TABLE tournament_participants
+DROP TABLE tournament_participants PURGE;
 
 ALTER TABLE tournaments
-DROP TABLE tournaments
+DROP TABLE tournaments PURGE;
 
 ALTER TABLE categories
-DROP TABLE categories;
+DROP TABLE categories PURGE;
 
 ALTER TABLE team_players
-DROP TABLE team_players;
+DROP TABLE team_players PURGE;
 
 ALTER TABLE teams
-DROP TABLE teams;
+DROP TABLE teams PURGE;
 
 ALTER TABLE players
-DROP TABLE players;
\ No newline at end of file
+DROP TABLE players PURGE;