Which one is not a type of subquery ?

Which one is not a type of subquery ?OptionsSingle row sub queryMultiple row sub queryCorrelated Sub queryVariation based Sub query

When you have a query inside of another query, the term “subquery” refers to which query?1 pointInnerOuter

Which of the following are not valid subquery type:Single row subqueryAll are validMultiple column subqueryMultiple row subquery

What is a subquery?a.A subquery is a condition that excludes all the invalid tuples from the databaseb.A subquery is a relation that is externally specified which can be used to handle data in queriesc.A subquery is a select-from-where expression that is nested within another queryd.A subquery is any query that is nested within another query

Which of the following statements is true concerning subqueries?Question 4Select one:a.Involves the use of an inner and outer queryb.Cannot return the same result as a query that is not a subquery.c.Does not start with the word SELECT.d.All of the above.