Entity Relationship Model Entity relationship model is a high-level data model that describes the logical structure of a database. It is a graphical representation of entities and their relationships to each other, typically used in modeling the organization of data within databases or information systems. 엔티티 관계 모델은 데이터베이스의 논리적 구조를 설명하는 상위 수준의 데이터 모델입니다. 엔티티와 엔티티 간의 관계를 그래픽으로 표현한 것으로, 일반적으로 데이터..

Tries Tries are a data structure that can be used to store strings. The idea is to store the characters of the string in a tree-like structure, where each node of the tree represents a single character. We can use this structure to store strings in a way that allows us to quickly search for strings with a common prefix. 트라이는 문자열을 저장하는 데 사용할 수 있는 데이터 구조입니다. 이 아이디어는 문자열의 문자를 트리와 같은 구조에 저장하는 것으로, 트..

Complexity Classes In computer science, there exist some problems whose solutions are not yet found, the problems are divided into classes known as Complexity Classes. In complexity theory, a Complexity Class is a set of problems with related complexity. These classes help scientists to groups problems based on how much time and space they require to solve problems and verify the solutions. It i..

※[https://roadmap.sh/computer-science]를 따라서 공부하고 기록한 글입니다. cs - 9. Common UML Diagrams - 9.2 Usecase Diagrams Usecase Diagrams Usecase diagrams are a type of diagram that are used to model the interactions between the actors and the usecases of the system. An actor is a person or a system that interacts with the system. Actors are represented by a rectangle with the name of the actor written ins..

※[https://roadmap.sh/computer-science]를 따라서 공부하고 기록한 글입니다. cs - 9. Common UML Diagrams - 9.1 Class Diagrams UML UML is a standard way of visualizing a software system. It is a general-purpose, developmental, modeling language in the field of software engineering that is intended to provide a standard way to visualize the design of a system. UML은 소프트웨어 시스템을 시각화하는 표준 방법입니다. 소프트웨어 엔지니어링 분야의 범용 개발 모..

※[https://roadmap.sh/computer-science]를 따라서 공부하고 기록한 글입니다. cs - 10. Design Patterns - 10.5 Type Object Pattern Type Object Pattern Type object pattern is a creational design pattern that allows us to create a new object of a type without exposing the object creation logic to the client. It is used when we need to create a new object of a type, but we don’t know which type we need to create until..