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LLDsystem_design~10 mins

Domain-Driven Design basics in LLD - Interactive Code Practice

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Practice - 5 Tasks
Answer the questions below
1fill in blank
easy

Complete the code to name the central concept that represents the core business logic.

LLD
The [1] is the main focus in Domain-Driven Design where business rules are implemented.
Drag options to blanks, or click blank then click option'
ADomain Model
BAggregate
CEntity
DRepository
Attempts:
3 left
💡 Hint
Common Mistakes
Confusing Repository with Domain Model
Choosing Entity instead of the overall model
2fill in blank
medium

Complete the code to identify the pattern that groups related objects and enforces consistency.

LLD
An [1] is a cluster of domain objects that can be treated as a single unit.
Drag options to blanks, or click blank then click option'
AService
BFactory
CAggregate
DEvent
Attempts:
3 left
💡 Hint
Common Mistakes
Confusing Service with Aggregate
Choosing Factory which is for object creation
3fill in blank
hard

Fix the error in the statement about the role of a Repository.

LLD
A Repository is responsible for [1] domain objects to and from the data store.
Drag options to blanks, or click blank then click option'
Apersisting
Bcreating
Cdeleting
Dvalidating
Attempts:
3 left
💡 Hint
Common Mistakes
Choosing creating instead of persisting
Confusing validation with repository responsibility
4fill in blank
hard

Fill both blanks to complete the definition of a Value Object.

LLD
A Value Object is [1] and [2]; it has no identity and is immutable.
Drag options to blanks, or click blank then click option'
Aimmutable
Bmutable
Cstateless
Dstateful
Attempts:
3 left
💡 Hint
Common Mistakes
Choosing mutable or stateful which contradict immutability
Confusing Value Objects with Entities
5fill in blank
hard

Fill all three blanks to complete the description of a Domain Service.

LLD
A Domain Service encapsulates [1] that don't naturally belong to [2] or [3].
Drag options to blanks, or click blank then click option'
Abusiness logic
BEntities
CValue Objects
Dinfrastructure code
Attempts:
3 left
💡 Hint
Common Mistakes
Choosing infrastructure code instead of business logic
Confusing Domain Services with Repositories