MySQL create table one to many, what is the best option below? - mysql

Question

I have below data and using mysql. Person_name is unique and TelephoneNumbers are unique per person.
Person_name1=TelephoneNumber1, TelephoneNumber2, TelephoneNumber3...
Person_name2=TelephoneNumber4, TelephoneNumber5, TelephoneNumber6...
Option 1. Create 1:Many master and child table.
CREATE TABLE Person (
personName varchar(50) NOT NULL,
id int NOT NULL AUTO_INCREMENT,
PRIMARY KEY (id),
UNIQUE KEY personName (personName)
);
CREATE TABLE Telephone (
telephoneNumber int,
mappingId int,
PRIMARY KEY (telephoneNumber),
foreign key(mappingId) references Person(id)
);
Option 2. Create one table with personName, telephoneNumber as Composite Key.
CREATE TABLE
Person_Telephone (
personName varchar(50) NOT NULL,
telephoneNumber int NOT NULL,
PRIMARY KEY(personName, telephoneNumber)
);
Option 1 is it over complicating creating two tables for just two fields?
Option 2 looks perfect and will there be any issues if Option 2 chosen over Option 1?

Answer 1

The option 2 gives you duplicate persons that you must control in every query.
The best is have the entities separate, it's a classic 1-N relation

Answer 2

Since users can have multiple phone numbers, I think 2 tables would be the best solution.
CREATE TABLE person (
PRIMARY KEY (id) AUTO_INCREMENT,
person_name VARCHAR(45) NOT NULL,
);
CREATE TABLE phone_number (
PRIMARY KEY (id) AUTO_INCREMENT,
phone_number VARCHAR(11) NOT NULL,
FOREIGN KEY (person_id) REFERENCES person(id)
)
Now you can simply JOIN the tables like this:
SELECT
t1.id,
t1.person_name,
t2.phone_number
FROM person t1
LEFT JOIN phone_number t2
ON (t1.id = t2.person_id);