DBMS Joins: Inner, THETA, Outer, Equi Types of Join Operations Join in DBMS is a binary operation that allows you to combine join product and selection in one single statement. The goal of creating a join condition is that it helps you to combine the data from two or more DBMS tables. The tables in DBMS are associated using the primary key and foreign keys. Types of Join There are mainly two types of joins in DBMS: Inner Joins: Theta, Natural, EQUI Outer Join: Left, Right, Full Inner Join Inner Join is used to return rows from both tables which satisfy the given condition. It is the most widely used join operation and can be considered as a default join-type An Inner join or equijoin is a comparator-based join which uses equality comparisons in the join-predicate. However, if you use other comparison operators like “>” it can’t be called equijoin. Inner Join further divided into three subtypes: Theta join Natural join EQUI join Theta Join Theta Join allows you to merge two tables ba...