Difference between primary key and unique key ?
Answer Posted / madhusudan reddy paila
Primery Key is allows the null value but unique wont accept
the null values in database ....
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Is oracle an open source?
What is a sub query? What are its various types?
Is it possible to set second Primary Key Constraint in a table in Oracle Database ?
How do I escape a reserved word in oracle?
How do you tell what your machine name is and what is its IP address?
How to change program global area (pga) in oracle?
what is the scripts in data base?
How to set a transaction to be read only in oracle?
If youre unsure in which script a sys or system-owned object is created, but you know its in a script from a specific directory, what UNIX command from that directory structure can you run to find your answer?
Is insert autocommit in oracle?
How do I use unicode codesets with the weblogic jdriver for oracle driver?
How to start instance with a minimal initialization parameter file?
How to use subqueries with the exists operator in oracle?
How to export data to a csv file?
There are n numbers of flatfile of exactly same format are placed in a folder.Can we load these flatfile's data one by one to a single relational table by a single session??