Bird
0
0

In NestJS with TypeORM, what does the @OneToMany decorator represent?

easy📝 Conceptual Q1 of 15
NestJS - Database with TypeORM
In NestJS with TypeORM, what does the @OneToMany decorator represent?
AMany entities related to many entities of another type
BA single entity related to many entities of another type
CMany entities related to a single entity of another type
DA single entity related to a single entity of another type
Step-by-Step Solution
Solution:

  1. Step 1: Understand the meaning of OneToMany

    The @OneToMany decorator defines a relationship where one entity instance is linked to many instances of another entity.

  2. Step 2: Match the description to the options

    A single entity related to many entities of another type correctly states that one entity relates to many entities of another type, which matches the @OneToMany concept.

  3. Final Answer:

    A single entity related to many entities of another type -> Option B

  4. Quick Check:

    OneToMany = single to many [OK]
Quick Trick: OneToMany means one entity owns many related entities [OK]
Common Mistakes:
  • Confusing OneToMany with ManyToOne
  • Thinking it means many to many
  • Assuming it links single to single

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More NestJS Quizzes
Database with Prisma - Prisma migrations - Quiz 3easy Database with Prisma - Prisma migrations - Quiz 12easy Database with Prisma - Prisma migrations - Quiz 2easy Database with TypeORM - Why TypeORM integrates seamlessly with NestJS - Quiz 4medium Database with TypeORM - Entity definition - Quiz 4medium Database with TypeORM - Migrations - Quiz 10hard Guards - Guard binding levels - Quiz 11easy Interceptors - Why interceptors add cross-cutting logic - Quiz 4medium Middleware - Middleware ordering - Quiz 1easy Middleware - Applying middleware to routes - Quiz 2easy