If a table column has is UNIQUE and has NOT NULL, is it
equivalent to a PRIMARY KEY column?
Answer Posted / murugananthan
NO, UNIQUE +NOT NULL != PRIMARY KEY
it cant refer someother table column
| Is This Answer Correct ? | 12 Yes | 2 No |
Post New Answer View All Answers
State all possible different index configurations a table can possibly have?
What is bulk copy or bcp in oracle?
List the types of joins used in writing subqueries?
What is a view and how is it different from a table?
What is execute immediate in oracle?
What is recovery manager(rman) backup in Oracle?
Is postgres faster than oracle?
What is difference between sid and service name in oracle?
How can you use check constraints for self referential integrity?
How to create a table in a specific tablespace?
What happens if the update subquery returns multiple rows?
What is Redo Log Buffer in Oracle?
Differentiate between pre-select and pre-query?
Whats the benefit of dbms_stats over analyze?
How to use "in out" parameter properly?