Primarykye-Foreign key relation ships are not compulsory to join two table

is that compulsory to have Primarykey-forignkey for joints
(outer inner,equal)

Question Posted / balakrishna

Answer Posted / balakrishna

Primarykye-Foreign key relation ships are not compulsory to
join two table, but it is recommended to have.

Is This Answer Correct ?

5 Yes

1 No

Please Help Members By Posting Answers For Below Questions

What class.forname does, while loading the drivers?

968

What is the meaning of batch updates?

1096

Name the method, which is used to prepare a callablestatement.

910

What is the use of jdbc api?

980

What does jdbc stand for?

939

What is a jdbc connection?

898

How to achieve JDBC Connection Pooling using JDBC DataSource and JNDI in Apache Tomcat Server?

1024

What class.forname will do while loading drivers of jdbc?

941

How can I determine the isolation levels supported by my DBMS?

991

What are types of resultset?

993

State the different connection methods used for creating different types of sql.

971

What are the differences between resultset and rowset?

1131

Why is odbc needed?

912

What is the use of setFetchSize() and setMaxRows() methods in Statement?

1000

Which database is used for java?

956