Learn how to calculate total hours for timecards in Salesforce declaratively using a Roll-Up Summary field. Discover the best approach for displaying aggregated data in your time management application.
Table of Contents
Question
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. A Visualforce page that calculates the total number of hours for a timecard and displays it on the page
B. A Roll-Up Summary field on the Timecard Object that calculates the total hours from timecard entries for that timecard
C. A Process Builder process that updates a field on the timecard when a timecard entry is created
D. An Apex trigger that uses an Aggregate Query to calculate the hours for a given timecard and stores it in a custom field
Answer
B. A Roll-Up Summary field on the Timecard Object that calculates the total hours from timecard entries for that timecard
Explanation
The most appropriate approach for the developer to calculate and display the total hours for each timecard declaratively is:
B. A Roll-Up Summary field on the Timecard Object that calculates the total hours from timecard entries for that timecard
Roll-Up Summary fields allow you to perform calculations on the records related to a master record through a Master-Detail relationship. In this case, the Timecard Object (master) has a Master-Detail relationship with the Timecard Entry Object (detail).
By creating a Roll-Up Summary field on the Timecard Object, the developer can aggregate the hours from the related Timecard Entry records and store the total in the Timecard record. This approach is declarative, meaning it can be implemented without writing code.
The other options are not the most suitable for this scenario:
A. Using a Visualforce page to calculate and display the total hours would require custom development and is not a declarative approach.
C. A Process Builder process can update a field when a record is created, but it cannot perform aggregate calculations across related records.
D. An Apex trigger with an Aggregate Query can calculate the total hours, but it involves custom coding and is not a declarative solution.
Therefore, using a Roll-Up Summary field is the most efficient and declarative way to calculate and display the total hours for each timecard in the time management application.
Salesforce Certified Platform Developer I CRT-450 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the Salesforce Certified Platform Developer I CRT-450 exam and earn Salesforce Certified Platform Developer I CRT-450 certification.