Software Architectures and Design Patters
Cod: 22304
Department: DCET
Scientific area: Computer Engineering
Total working hours: 156
Total contact time: 30

This CU aims to identify the need and the opportunity to reuse standard solutions for typical problems in software development and to study the most well-known software architectures and standards. It is also intended, in the face of a specific problem, to identify the architectures and standards that suit their resolution and implement them, using quality practices in software engineering.

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At the end of the training process in this curricular unit, students should be able to:

  1. Understand the quality problems that are resolvable or minimized through standardized solutions;
  2. Know the most known software architectures and standards;
  3. Know and apply techniques for implementing quality practices in software engineering.

  1. Introduction to architectural styles and design patterns.
  2. Architectural styles: MVC, stratified, repository, client-server, routing and filtering.
  3. Creation patterns: Abstract Factory; Builder; Factory Method; Prototype; Singleton.
  4. Structure standards: Adapter; Bridge; Composite; Decorator; Façade; Flyweight; Proxy.
  5. Patterns of behavior; Chain of responsibility; Command; Interpreter; Iterator; Mediator; Memento; Observer; State; Strategy; Template Method; Visitor.
  6. Software qualities and implementation techniques: simplicity, traceability, homogeneity, conformity with the design, independence to encourage reuse, weak coupling with strong cohesion, intelligibility, adaptability and maintenance.


  • Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides. (1994) Design Patterns: Elements of Reusable Object-Oriented Software, Addison-Wesley, ISBN13:9780201633610(Brazilian Portuguese Version: Gamma, E. (2009). Padrões de projetos: soluções reutilizáveis. Bookman editora.)


  • Alan Shalloway, James R. Trott. (2004) Design Patterns Explained: A New Perspective on Object-Oriented Design, 2nd Edition, AddisonWesley; ISBN13: 9780321247148


Evaluation is made on individual basis and it involves the coexistence of two modes: continuous assessment (60%) and final evaluation (40%). Further information is detailed in the Learning Agreement of the course unit.