Question

What are Joins in database management system ?​

Answer 1

Answer:

Definition - What does Join mean?

A join is an SQL operation performed to establish a connection between two or more database tables based on matching columns, thereby creating a relationship between the tables. Most complex queries in an SQL database management system involve join commands.

There are different types of joins. The type of join a programmer uses determines which records the query selects. Three algorithms work behind join operations: hash join, sort-merge join and nested loop join.

Answer 2

this may be the answer your finding for