primary key is a key which can define unique values where as foreign key

what is the difference between primary key & foreign key?

Question Posted / baburao

Answer Posted / baburao

primary key is a key which can define unique values
where as foreign key refers to a parent table and depends
on primary key

Is This Answer Correct ?

0 Yes

0 No

Please Help Members By Posting Answers For Below Questions

Explain the use of rows option in exp command.

1147

How to define an explicit cursor in oracle?

1099

How to delete a column in an existing table?

1130

What is query image?

1023

List the parts of a database trigger.

1108

How to create a stored function in oracle?

1156

How to omit columns with default values in insert statement in oracle?

1099

What is coalesce function?

1144

Is oracle an open source?

1125

How to display row numbers with the records?

1135

List out the components of logical database structure of oracle database.

1092

Explain how you would restore a database using RMAN to Point in Time?

2185

What are the uses of a database trigger?

1036

Explain oracle left join with an example?

1062

How to see the table columns used in an index?

1070