Answer / naresh

If you specify this option, later when you delete a row in
the parent table, the database server also deletes any rows
associated with that row (foreign keys) in a child table.
The principal advantage to the cascading-deletes feature is
that it allows you to reduce the quantity of SQL statements
you need to perform delete actions.

Answer / kunal sain

to drop the constraint from child table when dropping the
constraint from parent table.

Answer / nitesh

It is mainly used in referential integrity constraints.

When you use primary key/candidate key of one relation(say,
r1) as foreign key in other relation(say, r2), you want
changes made to primary key/candidate key of r1 must reflect
in foreign key of r2. And this can be achieved by CASCADE
constraint.
eg. consider two relations account, branch(with primary key
branch_name)

create table account(.....
foreign key branch_name references branch
on delete cascade
on update cascade
..........)

How to get @@error and @@rowcount at the same time?

0 Answers  

---

Explain features and concepts of analysis services?

0 Answers  

---

What stored by the model?

0 Answers  

---

What is openrowset sql server?

0 Answers  

---

I have a table EMP in which the values will be like this EmpId Ename Sal DeptId 11 Ram 10000 10 11 Ram 10000 10 22 Raj 20000 20 22 Raj 20000 20 33 Anil 15000 30 33 Anil 15000 30 I want to delete only duplicate Rows. After Delete I want the output like this EmpId Ename Sal DeptId 11 Ram 10000 10 22 Raj 20000 20 33 Anil 15000 30

13 Answers   DELL,

---

what is datawarehouse?

0 Answers   Informatica,

---

what is a stored procedure and trigger?

3 Answers  

---

What are the different type of replication in sql server?

0 Answers  

---

I have a table emp , Fields with empname,dnname,dno,salary. now I want copy distinct salary with all emp detail from emp into new table which is not already exist in database. how would I do this ?

2 Answers   Techno Labs,

---

How to return the date part only from a sql server datetime datatype?

0 Answers  

---

What do you understand by recursive stored procedure?

0 Answers  

---

What is the use of set nocount on/off statement?

0 Answers  

---