A developer needs to create an audit trail for records that are sent to the recycle bin. Which type of trigger is most appropriate to create?

A developer needs to apply the look and feel of lightning experience to a number of applications built using a custom third-party javascript framework and rendered in visualforce pages which option achieves this?

A developer creates an Apex helper class to handle complex trigger logic. How can the helper class warn users when the trigger exceeds DML governor limits?

What is an accurate constructor for a custom controller named "MyController"?

A developer is creating an application to track engines and their parts. An individual part can be used in different types of engines.What data model should be used to track the data and to prevent orphan records?