MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -The most common type of join is: SQL INNER JOIN (simple join). An SQL INNER JOIN returns all rows from multiple tables where the join condition is met.

Detailed explanation-2: -The simplest and most common form of a join is the SQL inner join the default of the SQL join types used in most database management systems. It’s the default SQL join you get when you use the join keyword by itself. The result of the SQL inner join includes rows from both the tables where the join conditions are met.

Detailed explanation-3: -The most important and frequently used of the joins is the INNER JOIN. They are also referred to as an EQUIJOIN. The INNER JOIN creates a new result table by combining column values of two tables (table1 and table2) based upon the join-predicate.

Detailed explanation-4: -Theta Join, Equijoin, and Natural Join are called inner joins.

Detailed explanation-5: -Inner joins are the most commonly used. They only combine records from the two tables if they both match the join condition (share a common attribute).