What are the types of relationships used in MySQL?
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There are three categories of relationships in MySQL:
One-to-One: Usually, when two items have a one-to-one relationship, you just include them as columns in the same table.
One-to-Many: One-to-many (or many-to-one) relationships occur when one row in one table is linked to many rows in another table.
Many-to-Many: In a many-to-many relationship, many rows in one table are linked to many rows in another table. To create this relationship, add a third table containing the same key column from each of the other tables
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