Primary key not accepts to null values in database, but uniqe key accepts

Difference between primary key and unique key ?

Question Posted / anil singh

Answer Posted / anil singh

Primary key not accepts to null values in database, but
uniqe key accepts to the null values in database.

Is This Answer Correct ?

77 Yes

35 No

Please Help Members By Posting Answers For Below Questions

Where do you use decode and case statements?

994

How to write date and time interval literals in oracle?

1036

How different is ms access and oracle?

1040

Explain the dml?

983

What is the difference between view and materialized view in Oracle?

1156

What are a query and state the different types of queries and their uses?

1016

How to execute a stored program unit?

1077

How to commit the current transaction in oracle?

1120

What is recovery manager(rman) backup in Oracle?

1185

What are the major difference between truncate and delete?

1058

Name the three major set of files on disk that compose a database in Oracle?

1123

what are steps for interface? where is exchange rate defined in which table?

2160

How to check your oracle database 10g xe installation?

988

What is BBED in Oracle?

1155

How to delete a column in an existing table in oracle?

1073