what is mean by prmary key and foreign key and how can we
diffrentiate that?
Please answer me.
Advance thanks.
- 9 Answers
- 16121 Views
- BPO, Excel, Wipro, I also Faced
- E-Mail Answers
Answer Posted / nimmi
PRIMARY KEY : IS THE UNIQUE KEY OF A SINGLE TABLE THAT IS
THE UNIQUE IDENTIFICATION OF THE SAME TABLE.
FOREIGN KEY: MEANS A UNIQUE KEY IDENTIFICATION COMMON TO TWO
TABLES .
| Is This Answer Correct ? | 4 Yes | 1 No |
Post New Answer View All Answers
How to put more than 1000 values into an oracle in clause?
Give the various exception types.
How to use "if" statements on multiple conditions?
Whether any commands are used for months calculation? If so, what are they?
Can objects of the same schema reside in different tablespace?
What are the parameters that we can pass through a stored procedure?
1) WIll all the user get the DEFAULT profile, if their current profile got deleted at any point of time? 2) What are the Situation we need to MOVE the TABLE between T.spaces? 3) What is the use of MOVING the TABLE between SCHEMA'S? 4) What are the Table Clause, Segment Clause and the Datafile Clause which will override each other? 5) Explain SORT_AREA_SIZE of Tempfile to make UNIFORM SIZE
What is the difference between 10g OEM and 11g OEM?
What is the difference between online and offline backups?
What is oracle and what are its different editions?
What is a package in oracle?
How to download oracle database 10g xe?
How do you increase the OS limitation for open files (LINUX and/or Solaris)?
Explain what are synonyms used for?
What are the oracle built-in data types?
