To eliminate duplicate rows in a query, the qualifier is used in the SQL Select command. o distinct O check O specific O unique In SQL environment, a schema is used to group a collection of database objects related to each other. Ol True O False The primary key must always be specified when creating a new table using the CREATE TABLE command. O True O False The use of the keyword allows you to compare a single value with a list of values returned by a subquery. O A. CHECK O B. DISTINCT O C. IN OD. LIKE