A developer has the following requirements:
Calculate the total amount on an Order.
Calculate the line amount for each Line Item based on quantity selected and price.
Move Line Items to a different Order if a Line Item is not stock.
Which relationship implementation supports these requirements?

What should a developer do to check the code coverage of a class after running all tests?

A developer is asked to write helper methods that create test data for unit tests.

What should be changed in the Testvtils class so that its methods are only usable by unit test methods?

How can a developer check the test coverage of active Process Builder and Flows deploying them in a Changing Set?

A developer has requirement to write Apex code to update a large number of account records on a nightly basis. The system administrator needs to be able to schedule the class to run after business hours on an as-needed basis.
Which class definition should be used to successfully implement this requirement?