column having primary key constraint should not contain null values. c

Difference between primary key and unique key ?

Question Posted / sonali.s

Answer Posted / sonali.s

column having primary key constraint should not contain
null values.

column having unique key constraint can contain null values.

Is This Answer Correct ?

1 Yes

2 No

Please Help Members By Posting Answers For Below Questions

HI, Please let me know the syllabus for Oracle OCA and OCP Certification

2431

Explain the use of rows option in exp command.

1020

How many types of synonyms in Oracle?

1062

A table t is there.If you perform insert ,update and delete then the trigger will fire.What is the minimum no of trigger required for a table.

5406

Is there a function to split a string in plsql?

980

Explain about integrity constraint?

1076

11. Display the client number and name and the client number and name of the person who referred that client.

2270

Why cursor variables are easier to use than cursors?

1019

How can I see all tables in oracle?

949

What is an oracle user role?

936

Can objects of the same schema reside in different tablespace?

999

How to divide query output into groups in oracle?

942

What privilege is needed for a user to create indexes in oracle?

961

How to check database size in Oracle?

1107

How to create lov dynamically at runtime & attach to text field?

1096