LLD - Advanced LLD ConceptsWhich building block in Domain-Driven Design is responsible for enforcing business rules and consistency?ARepositoryBAggregateCServiceDFactoryCheck Answer
Step-by-Step SolutionSolution:Step 1: Identify Aggregate roleAn Aggregate is a cluster of domain objects treated as a single unit for data changes and consistency.Step 2: Understand business rule enforcementAggregates enforce business rules and maintain consistency boundaries.Final Answer:Aggregate -> Option BQuick Check:Aggregate = Enforces business rules [OK]Quick Trick: Aggregates keep business rules consistent [OK]Common Mistakes:MISTAKESConfusing Repository with business logicThinking Services enforce consistencyAssuming Factories enforce rules
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