1. Oracle Cloud HCM: Using Fast Formulas (Release 23D)
Chapter 3: Database Items
Section: Database Items in Formulas.
This section explains the fundamental role of DBIs: "A database item is a mechanism for the formula to retrieve a value from a database table... When the formula runs
it replaces the database item with its value from the database." This confirms that formulas access the database directly via DBIs.
2. Oracle Cloud HCM: Implementing Time and Labor (Release 23D)
Chapter 11: Time and Labor Fast Formulas
Section: How You Use Database Items in Time and Labor Formulas.
This section explicitly states
"You can use database items in your time and labor formulas to retrieve information that isn't available from the time card entry
such as a person's bargaining unit
grade
or location." This directly supports answer A and refutes the limitation described in answer B.
3. Oracle Cloud HCM: Implementing Time and Labor (Release 23D)
Chapter 11: Time and Labor Fast Formulas
Section: Formula Performance Best Practices.
This section advises on the efficient use of DBIs
stating
"Use database items that retrieve a set of data rather than single values." This implicitly confirms that direct DBI access to a wide range of data is the standard
intended mechanism.