Database Join

Database Join is a technique used in relational databases to combine data from two or more tables based on a related column between them. The process of joining tables involves selecting columns from the tables to be joined, specifying the join condition, and then executing the join operation. There are different types of joins such as inner join, left join, right join, and full outer join. Inner join returns only the matching rows from both tables, left join returns all the rows from the left table and matching rows from the right table, right join returns all the rows from the right table and matching rows from the left table, and full outer join returns all the rows from both tables. Joining tables is a fundamental operation in SQL and is used extensively in data analysis and business intelligence applications.
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