SkillsCast

Systems and Domains. Triplet Sons of Different Mothers

14th June 2013 in London at The Crypt, St James Church Clerkenwell

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An application is a _system_ that connects the business domain model, the technical domain, and the specific use cases of a particular application. These three aspects of an application are often at odds with each other because they have opposing needs and affordances. It is the job of the System Architecture to balance those forces allowing these competing application aspects to work in harmony.

The domain model of an application describes the organization and partitioning of the business logic and rules. The business can look at that model and recognize itself. This is a good thing; but it's only part of the problem. An application is a system that connects the business domain model, the technical domain, and the specific use cases of a particular application. These three aspects of an application are often at odds with each other because they have opposing needs and affordances. It is the job of the System Architecture to balance those forces allowing these competing application aspects to work in harmony. Getting this right is critical to the lifecycle of the application and is an essential element in creating well-crafted applications.

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Systems and Domains. Triplet Sons of Different Mothers

Uncle Bob (Robert C. Martin)

Robert Martin (@unclebobmartin) has been a programmer since 1970. He is the Master Craftsman at 8th Light inc, an acclaimed speaker at conferences worldwide, and the author of many books including: The Clean Coder, Clean Code, Agile Software Development: Principles, Patterns, and Practices, and UML for Java Programmers.