Which of the following creates a virtual relation for storing the query?

Related MCQs

• Given the relation Supplier(s_id, p_order, s_name, qty) Given that there is a unique s_name for each s_id and that s_id, p_order is a composite key, find the correct statement among the following: i. this relation is a BCNF ii. this is 3 NF relation iii. this is a 2 NF relation iv. this is a 1 NF relation
• Which of the following creates a temporary relation for the query on which it is defined?
• Relational Algebra is a                      query language that takes two relations as input and produces another relation as an output of the query.
• Relational Algebra is a __________ query language that takes two relations as input and produces another relation as an output of the query.
•                                allows a system administrator to associate a function with a relation; the function returns a predicate that must be added to any query that uses the relation.
• A type of query that is placed within a WHERE or HAVING clause of another query is called
• A type of query that is placed within a WHERE or HAVING clause of another query is called
• Any recursive view must be defined as the union of two subqueries: a                query that is nonrecursive and a                      query.
• The relation with the attribute which is the primary key is referenced in another relation. The relation which has the attribute as a primary key is called                              
• The relation with the attribute which is the primary key is referenced in another relation. The relation which has the attribute as a primary key is called ______________