For example, consider the diagram in Figure 2 of the Micro-kernel architecture pattern: Figure 2: Component Types in micro-kernel architecture
Each component has a responsibility within the architecture. Generally, design patterns utilize one type of entity (the class from object oriented programming) and illustrate the relationship between the classes within a solution.Īrchitecture patterns utilize a variety of component types, each typically composed of successively smaller modules. Often an architectural pattern consists of several diagrams, each showing an important dimension. For example, if developers violate this principle (e.g., performing queries from the presentation layer directly to the data layer), it compromises the separation of concerns and layer isolation that are the prime benefits of this pattern. This feature of the architecture isn’t the most important part, but is important to call out because if affects the efficacy of this pattern. Figure 1: Layered architecture with mixed closed and open layers For example, one aspect of the Layered architecture pattern is whether the layers are closed (only accessible from the superior layer) or open (allowed to bypass the layer if no value added), as shown in Figure 1. For example, many times the purpose of the diagram is to show one aspect of the system, and simple iconography works best. Learn moreĪrchitecture diagrams tend to be less rigidly defined than class diagrams.
ARCHITECTURAL PROGRAMMING DIAGRAMS TRIAL
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