3 — Relationships Between Objects
Purpose
[stub: relationships-between-objects]
Planned coverage:
- Association
- Aggregation
- Composition
- Dependency
- Real-world Examples
Metadata
| Author | Amit Singh |
| Scope | low-level-design |
Local graph
Related notes
1 — What is Low-Level Design?
How Low-Level Design differs from High-Level Design, where it sits in the software development lifecycle, and the criteria MAANG interviewers actually use to evaluate it.
2 — Object-Oriented Programming Refresher
A fast recap of the four OOP pillars — encapsulation, abstraction, inheritance, and polymorphism — plus the composition-over-inheritance tradeoff the rest of this book leans on.
4 — Object Lifecycle
How an object comes into existence and who owns it — creation, memory allocation, constructors, factory-based creation, and ownership semantics.
Low-Level Design for MAANG Interviews
A book-shaped table of contents for LLD interview prep: OOP fundamentals through SOLID, design principles, UML, design patterns, dependency management, reliability, concurrency, domain modeling, API design, testing, refactoring, classic interview problems, advanced architecture, and performance — cross-linking Object-Oriented Programming and Patterns instead of duplicating them.