How to use the keyword 'references' in MySQL?

Question

How is the references keyword used when creating a table?

Let\'s say I want to create two tables person and hobby and I want t

Answer 1

Reference keyword is used actually to know where the foreign key has come. That means which is the table name and what is the name of this in that table.

I say this is correct :

CREATE TABLE person (person_id INT NOT NULL, 
PRIMARY KEY (person_id));

CREATE TABLE hobby (hobby_id INT NOT NULL, person_id INT NOT NULL,
PRIMARY KEY(hobby_id),
FOREIGN KEY(person_id) REFERENCES person(person_id));

Then, look at this line :

FOREIGN KEY(person_id) REFERENCES person(person_id));

Here person_id is the foreign key and it has come from person table and in that table it's name is person_id... That's it.