Which statement should a developer avoid using inside procedural loops? (Choose 2)

What is the return data type when ApexPages.currentPage().getParameters() is used to retrieve URL parameters from a visualforce controller?

Which Apex collection is used to ensure that all values are unique?

A company wants to create an employee rating program that allows employees to rate each other. An employee's average rating must be displayed on the employee record. Employees must be able to create rating records, but are not allowed to create employee records. Which two actions should a developer take to accomplish this task? choose 2 answers

A developer writes a before insert trigger.How can the developer access the incoming records in the trigger body?