Boleh Tolong Check Tak?

[game-game 0]

salam..korang bleh check tak coding sql aku?? aku taktau maner silap..

create table Branch(

BranchNo VARCHAR(4),

Street VARCHAR(20),

city VARCHAR(20),

postcode NUMBER(5),

constraint Branch_PKey PRIMARY KEY(BranchNo));

INSERT INTO Branch VALUES('BOO5','88 Inanam Road','Kota Kinabalu',88586);

INSERT INTO Branch VALUES('BOO7','199 Nilai St','Seremban',77756);

INSERT INTO Branch VALUES('BOO8','30 Lorong Duku','Miri',99957);

create table stuff(

StaffNo NUMBER(3),

FName VARCHAR(10),

LName VARCHAR(10),

Position VARCHAR(15),

Sex VARCHAR(3),

State VARCHAR(20),

Salary NUMBER(7),

BranchNo VARCHAR(4),

Constraint Branch2_PKey PRIMARY KEY(StaffNo),

FOREIGN KEY(BranchNo)REFERENCES Branch);

INSERT INTO stuff VALUES(100,'Sylvester','Ito','G.Manager','M','Selangor',60000,'BOO3');

INSERT INTO stuff VALUES(200,'Tommy','Lee','Manager','M','Sabah',9000,'BOO5');

INSERT INTO stuff VALUES(300,'Jimmy','Johnny','Supervisor','M','Kuala Lumpur',9000,'BOO1');

INSERT INTO stuff VALUES(400,'Melenie','Alex','Manager','F','Kuala Lumpur',20000,'BOO1');

INSERT INTO stuff VALUES(500,'Irene','Tan','Assistant','F','Sarawak',8500,'BOO8');

INSERT INTO stuff VALUES(600,'Terrence','Dominic','Accountant','M','Negeri Sembilan',15000,'BOO7');

INSERT INTO stuff VALUES(700,'Albert','Ernest','Manager','M','Selangor',25000,'BOO3');

INSERT INTO stuff VALUES(800,'Vincent','Gom','Supervisor','M','Kuala Lumpur',8500,'BOO1');

INSERT INTO stuff VALUES(900,'James','Sulivan','Assistant','M','Sabah',10000,'BOO5');

INSERT INTO stuff VALUES(999,'Alfonso','Joseph','Assistant','M','Selangor',11000,'BOO3');

Thanks..