In the next video, you will learn the concept of 'system boundary'.
In the previous video, you learnt that a system boundary is drawn to make a use case diagram cleaner by enclosing the use cases inside it. This indicates that use cases are internal to the system and actors are external to the system.
We can differentiate between things which are internal to the system and things which are external to the system. For example, all the actors are external to the system while all these use cases are internal to the system. Things which are internal to the system can be grouped together with a system boundary which is a thick line and a name given to it. As you can see IMS in Entry management system which shows all the things which are internal to the system inside the system boundary and the ones which are external to the system are outside the system boundary.
Internal and external components of a system can be differentiated
Actors are external to the system while use cases are internal
System boundary can be used to group internal components together
System boundary is represented by a thick line and a name
IMS represents internal components of the Entry management system within the boundary
External components are located outside the system boundary
So far you have learned that the System Boundary can be used to indicate what is internal to the system and what is external to the system. In the next video, you will see how to use the System Boundary to represent different modules in a use case diagram.
In the previous video, you learned that System Boundary can also be used to segregate different use cases into different modules. Multiple relevant use cases can be clubbed together to form a module.
In this segment, you were introduced to the concept and the use of System boundaries. System boundaries can be used to distinguish between what is internal to the system (use cases) and what is external to the system (actors). The internal or the use cases can also be segregated into different modules using the System Boundary.