A developer working on a time management application wants to make total hours for each timecard available to application users. A timecard entry has a Master-Detail relationship to a timecard.
Which approach should the developer use to accomplish this declaratively?
- A Visualforce page that calculates the total number of hours for a timecard and displays it on the page
- A Roll-Up Summary field on the Timecard Object that calculates the total hours from timecard entries for that timecard
- A Process Builder process that updates a field on the timecard when a timecard entry is created
- An Apex trigger that uses an Aggregate Query to calculate the hours for a given timecard and stores it in a custom field