May 2019
Intermediate to advanced
546 pages
12h 41m
English
Content preview from Salesforce Platform Developer I Certification Guide
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Rollup summary fields
A rollup summary field (RUS) field is very much like a formula field in that it also performs a calculation. However, this is based on child records, and only when these child records are part of a Master-Detail relationship!
It's used to summarize a numeric value based on (filtered) child records and can perform COUNT, SUM, MIN, and MAX.
It is recalculated whenever a transaction on these child records occurs in the following ways:
- When a new child is created
- When one of the children gets updated
- When a child gets deleted
You can use filters to only pull values from specific child records. For example, let's say that we have a custom Invoice__c object that is related to the account as a Master-Detail relationship. ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.