Delete a row in a table should affect in another table specified row

Question

hello ,
my problem is let us  assume i have two table related to each other as
dish       [d_id as primary key ,d_name,d_code,d_cost]
dish_outlet    [id as primary key,d_id as foreign key,outlet_name,amt]
i set foreign constraint in dish_outlet as foreign basetable as [dish_outlet] , foreign key as [d_id] , primary key table as [dish],primary key as [d_id].
now i want to do as delete a row where d_id is let us suppose '1'  in dish table but also dish_outlet whose d_id will be '1' should also get deletd
my issue is on [DELETE FROM dish WHERE d_id ='1'] query a row is deleted from dish table only.
give a opinion or solution to my problem i need a query for vb.net and if foreign key setting is mistaken then need a procedure to solve it.
im using vb.net with sqlserver 2005 with sqlserver management studio
aziz

Answer 1

use ondelete cascade option
Please see below example for your reference
CREATE TABLE dbo.cource
      courceID     INT   PRIMARY KEY,
      Name        VARCHAR(50)
CREATE TABLE dbo.student
     studentID     INT   PRIMARY KEY,
     name     VARCHAR(50),
     courceID     INT   REFERENCES cource(courceID)
                        ON DELETE SET NULL
                        ON UPDATE CASCADE,
      Duration    TIME(0)
INSERT      INTO dbo.cource(courceID  , Name)
VALUES      (1,'c1'), (4,'c2')
INSERT      INTO dbo.student (studentID,name, courceID, Duration)
VALUES      (1, 's1' , 1, '00:07:08'),
            (2, 's2', 1, '00:07:52'),
            (3, 's3', 1, '00:07:56'),
            (4, 's4', 4, '00:05:12')
DELETE FROM dbo.cource
WHERE courceID = 1
SELECT      A.courceid, A.Name,
            T.studentID, T.name, T.courceID, T.Duration
FROM        dbo.cource  A
RIGHT JOIN dbo.student T ON A.courceid = T.courceID