What is Joins?

In the context of databases, "Joins" are operations that combine rows from two or more tables based on a related column between them. They are fundamental for querying and retrieving data across multiple related tables in a relational database. Common types of joins include INNER JOIN (returns rows only when there's a match in both tables), LEFT JOIN (returns all rows from the left table and matching rows from the right table), RIGHT JOIN (returns all rows from the right table and matching rows from the left table), and FULL OUTER JOIN (returns all rows when there is a match in either table).