Which of the following statements about theta join is true?a.Theta join can be performed only with the natural join operation.b.Theta join allows for more flexibility as it can use any comparison condition.c.Theta join always produces a Cartesian product.d.Theta join cannot be performed in relational algebra.

Which of the following is true? I. Implementation of self-join is possible in SQL with table alias.II. Outer-join operation is the basic operation in relational algebra. III. Natural join and outer join operations are equivalent.

What are Joins? Discuss all types of Joins with the help of suitable examples.

Which join is equivalent to a Cartesian Product?Answer choicesSelect an optionINNER JOINCROSS JOINOuter joinNone of the above

Which of the following about JOIN operations is/are correct?Question 9Select one or more:Select one or more:a.The lack of JOIN operations in a NoSQL database leads to the issues of data redundancy and data integrity.b.MongoDB supports a JOIN operator, similar to relational databases.c.The JOIN operations are essential for developing efficient autosharding technologies.d.The JOIN operations are not common in NoSQL databases because they could make the query processing slow.

Which of the following are valid types of JOINs? 1 pointLEFT OUTER JOINRIGHT OUTER JOINFULL OUTER JOINFULL LEFT JOINAll of the above