WebMusic’s Database Designer, Janet, Has Hired an Intern

Multiple Choice

WebMusic’s database designer, Janet, has hired an intern. She has requested that this intern create some SQL queries that would be useful to managers tracking the day-to-day operations of the store.
-A customer would like a list of all of the CDs from their favorite group that are priced at $10.00 or less at WebMusic.Which of the following categories of operators would be used in order to perform the proper type of query for the customer?

A) Boolean operators
B) join operators
C) parameter operators
D) foreign operators