What is difference b/w composit key n primary key and
forigion key?
Answer Posted / reem
A primary key is a column which uniquely identifies the
records in a table.
A foreign key is a column (the child collumn) in a table
which has a corresponding relationship and a dependency on
another collumn (the parent collumn) that is usually in a
different table.
comosit key is more than one attribute can used as aprimary
key
Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What is the password of mysql?
What you can use regular expression for in mysql? Support your answer with an example?
How do I declare a variable in mysql?
Explain the different types of constraints?
Can u give the example by taking an unnormalized table and make that 1nf and then 25nf, and then 3 nf?
What is mysql cursor?
Why we use mongodb instead of mysql?
What is difference between Sql server and MySql database? It may be silly question but i really dont know.
How do I disconnect mysql workbench?
How do I create a database in mysql workbench?
Is number a datatype in mysql?
What is a mysql server?
What is the phantom problem?
How many threads can mysql handle?
How many primary keys can be there in a table?