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 are operators in oracle?
How to create a table interactively?
What is a subquery in oracle?
Explain about integrity constraint?
What do you understand by database schema and what does it hold?
What is the difference between postgresql and oracle?
How to sort output in descending order in oracle?
What are advantages of dateset in datastage?
I creat Credit memo in AR. Now i want revers the Credit Memo.how you can revers that what out any aditional entry.
How to bring a tablespace offline?
How to execute a stored program unit?
Can we save images in a database and if yes, how?
candidate key is subset of super key but not vice-verse explain
What is the difference between view and materialized view in Oracle?
Is oracle an operator?