Doubts in case of use

Question

People I’m new to software engineering, and I have a question in use cases, can the system be an actor? For example in a university system having a case of using a search engine.

Answer 1

Depending on the UML - User Guide - BOOCH, RUMBAUCH, JACOBSON

Actor:
An actor represents a coherent set of roles that the users of use cases play when they interact with these cases of use. Typically, an actor plays a role that a human being, a hardware device or even other system plays with the system.

For example, if you work in a bank, it could be a AgenteDeEmpréstimo. If you use the personal banking service, you will also play the role of cliente. An instance of an actor therefore represents an individual interaction with the system in a specific way. Although you use actors in your modeling, actors are not, in fact, part of the system.

They reside outside the system.

Answer 2

An actor is the one who will execute the use case (who will execute the functionality that is specified in the use case) be it human or systemic and not in itself a part of the system.