Understanding the Difference Between Business Rules and Trivial Validation

TLDRBusiness rules and trivial validation are often confused, but they serve different purposes. Trivial validation is static, superficial, and deterministic, while business rules can evolve, expand, and are based on the state of the system.

Key insights

🔍Trivial validation is often static, superficial, and deterministic.

💼Business rules can evolve, expand, and are based on the state of the system.

🔄Trivial validation focuses on input/output and is often translation-based.

🏷️Business rules may be related to the quantity buffer or other complex logic.

💡Business rules can be defined in code, reducing reliance on end users' knowledge.

Q&A

What is the difference between business rules and trivial validation?

Business rules can evolve, expand, and are based on the state of the system, while trivial validation is often static, superficial, and deterministic.

Can trivial validation be separated from business logic?

Yes, trivial validation can be moved to a higher level, separate from the business logic, to maintain clarity and avoid intermingling.

Can business rules change over time?

Yes, business rules can evolve as the domain or business requirements change. They can also expand to include additional rules.

Are business rules always deterministic?

Business rules may or may not be deterministic, depending on how the state of the system is derived.

How can business rules be defined in code?

Business rules can be encapsulated within domain concepts, such as aggregates, to separate and manage the logic effectively.

Timestamped Summary

00:00Business rules are often confused with trivial validation, but they have distinct characteristics.

03:40Trivial validation is static, superficial, and often translation-based.

05:52Business rules can evolve, expand, and are based on the state of the system.

07:13Separating trivial validation from business logic can lead to a more maintainable codebase.

08:49Understanding the difference between business rules and trivial validation can impact software architecture and design decisions.