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Architectural Modeling Component Diagram Common Modeling Techniques

Common Modeling Techniques
  • Modeling Source Code
  • Modeling Executable Release
  • Modeling a Physical Database
  • Modeling Adaptable Systems
Modeling Source Code 
To model a system's source code, 
  • Either by forward or reverse engineering, identify the set of source code files of interest and model them as components stereotyped as files 
  • For larger systems, use packages to show groups of source code files 
  • Consider exposing a tagged value indicating such information as the version number of the source code file, its author and the date it was last changed 
  • Use tools to manage the value of this tag 
  • Model the compilation dependencies among the source files using dependencies 
  • Where possible, use tools to help generate and manage these dependencies

Modeling Executable Release 
To model an executable release,
  • Identify the set of artifacts you want to model 
  • Typically, this will involve some or all the components that live on one node, or the distribution of these sets of components across all the nodes in the system 
  • Consider the stereotype of each component in this set 
  • For most systems, you will find a small number of different kinds of components (such as executable's libraries, tables, files and documents) 
  • Using extensibility mechanisms, provide visual cues for these stereotypes 
  • For each component in this set, consider its relationship to its neighbors 
  • Most often, this will involve interfaces that are exported (realized) by certain components and then imported (used) by others

Modeling a Physical Database 
To model a physical database, 
  • Identify the classes in the model that represent your logical database schema i.e., the objects of those classes need to be persistent 
  • Select a strategy for mapping these classes to tables 
  • You will also want to consider the physical distribution of your databases 
  • Based on the location in which the data needs to live in the deployed, map physical distribution of the databases 
  • To visualize, specify, construct and document the mapping, create a component diagram that contains components stereotyped as tables 
  • Where possible, use tools to transform the logical design into a physical design

Modeling Adaptable Systems 
To model an adaptable system, 
  • Consider the physical distribution of the components that may migrate from node to node 
  • You can specify the location of a component instance by marking it with a location attribute, which you can then render in a component diagram 
  • If you want to model the actions that cause a component migrate, create a corresponding interaction diagram that contains component instances
  • You can illustrate a change of location by drawing the same instance more than once, but with different values for its state, which includes its location



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