Test: Joins Operations - Computer Science Engineering (CSE) MCQ

Oracle 9i is a version of the Oracle Database. The i stands for “Internet” to indicate that 9i is “Internet ready”.

INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN, EQUIJOIN are the types of joins.

An equi-join is a specific type of comparator-based join, that uses only equality comparisons in the join-predicate.

The DELETE statement is used to delete rows in a table. The UPDATE statement is used to update existing records in a table. The INSERT INTO statement is used to insert new records in a table.

An SQL join clause combines records from two or more tables in a database. It creates a set that can be saved as a table or used as it is. A JOIN is a means for combining fields from two tables by using values common to each.

If and only if a given join condition is met, a Join operation will combine related tuples from separate relations.

There are 3 types of Join Operations.

There are three types of Outer Join: LEFT JOIN , RIGHT JOIN , and FULL JOIN.

It is the set of all the tuples that have the same attribute names in each of A and S.

The Outer Join Operation is an extension of the Join Operation.