what is mean by prmary key and foreign key and how can we
diffrentiate that?
Please answer me.
Advance thanks.
Answer Posted / ravi singh
Primary Keys: Primary keys are the identifier and applied
on the table in the form of constraints. Primary key
provides uniqueness in the data.
Foreign Key: Foreign Keys are the relationship and applied
on the table in the form of constraints. Foreign key in a
table is a primary key of another table and use to make
relationship between two tables.
Is This Answer Correct ? | 59 Yes | 3 No |
Post New Answer View All Answers
What are oracle functions?
How to convert characters to numbers in oracle?
What is the scope of a local variable?
How to use fetch statement in a loop?
What is dynamic proxy?
How to run the anonymous block again?
What are the execution control statements in oracle?
What is oracle server autotrace in oracle?
When do you get a .pll extension in oracle? Explain its importance
How to add another datafile to a tablespace?
how can we store any pdf file in oracle
Is it possible to center an object horizontally in a repeating frame that has a variable horizontal size ?
WHAT IS THE DEFINITION OF DEFAULT CUSTOMER IN AR?
What are named parameters?
How to upsert (update or insert into a table)?