Database Join Operation
Database Join Operation is a technique used to combine data from two or more tables in a relational database based on a related column between them. The join operation is performed by matching the values in the specified columns of the tables and returning a new table that contains all the columns of the original tables. There are different types of join operations 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. Join operations are commonly used in data analysis and data mining to combine data from multiple sources and extract meaningful insights.
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