A context diagram stands as a cornerstone in system analysis, offering a bird’s-eye view of a system’s landscape. It’s a high-level representation that encapsulates the system’s scope, illustrating how it interacts with external entities—users, systems, and data flows.
Activity diagrams can be used in all stages of software development and for various purposes. And because they are a lot similar to flowcharts, they are generally more popular than other UML diagram types.
Deployment diagrams are used to visualize the hardware processors/ nodes/ devices of a system, the links of communication between them and the placement of software files on that hardware.
Class diagrams are the main building blocks of object-oriented modeling so it is important that you understand the various class diagram relationships and how they affect your solution.
UML is a versatile visual language that is used to model a software system. The software industry has been divided in its opinion regarding the use of UML diagrams.