5: Entities

Caution: Avoid "Entity-Think"...

  • There is a tendency for developers to focus on data rather than the Domain.

  • This is often due to prevailing approaches to software development that place importance on the database.

  • Instead of designing domain concepts with rich behavior, we think about attributes (columns) and associations (foreign keys) of the data.

  • This often leads to every concept in the Domain Model being coded as an Entity with getter & setter methods.

  • This is NOT the only behavior DDD entities should have.

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