This section introduces a set of features of the Force.com database that are unique to the way the Force.com platform works. Their configuration and behavior build on the definition of objects and fields, extending them to support more complex native user interfaces, calculations performed on groups of records, and the storage of configuration data.
The following features are discussed in this section:
Roll-up summary fields—Roll-up summary fields are like formula fields that operate on a group of records, calculating their sum, minimum, maximum, or a record count.
Dependent fields—Dependent fields enable the standard ...