If a table column has is UNIQUE and has NOT NULL, is it
equivalent to a PRIMARY KEY column?
Answer Posted / kuldeep singh
Primary Key=Unique+Not Null+Sorting+Cluster Index
So
UNIQUE +NOT NULL != PRIMARY KEY
it cant refer someother table column
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
What is the difference between truncate & delete command?
Can you tell me how to add new column in existing views?how?How is possible?
State all possible different index configurations a table can possibly have?
What is an index associated with a constraint?
How to define a record variable to store a table row?
What happens if you use a wrong connect identifier?
What are temporal data types in oracle?
I creat Credit memo in AR. Now i want revers the Credit Memo.how you can revers that what out any aditional entry.
Explain the difference between replace() and translate() functions in oracle?
How to insert a new row into a table in oracle?
What is the purpose of save points in oracle database?
What is a snapshot log?
You have 4 instances running on the same UNIX box. How can you determine which shared memory and semaphores are associated with which instance?
When do I need to use a semicolon vs a slash in oracle sql?
Explain the use of full option in exp command.