What is the difference between the Primary and Foreign key?
Answer Posted / suma
Primary key is unique index and non null coulum in a table.
While foreign key can have repeated values.
Is This Answer Correct ? | 9 Yes | 1 No |
Post New Answer View All Answers
Why is theta join required?
Why is there a need for sqlcode and sqlerrm variables?
What is procedure and function?
What is the left table in sql?
What are the two different parts of the pl/sql packages?
What is a unique key?
Is pl sql and postgresql same?
what are the 'mysql' command line arguments? : Sql dba
what are all the different types of indexes? : Sql dba
How many row comparison operators are used while working with a subquery?
How do I count records in sql?
What is the use of non clustered index?
Write the command to remove all players named sachin from the players table.
Is it important to partition hard disk?
how to select unique records from a table? : Sql dba