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 ## Table of Contents
 
-- [Basic Knowledge of Computer Science](#basic-knowledge-of-computer-science)
-  - [Table of Contents](#table-of-contents)
-  - [About](#about)
-    - [Repository Rule](#repository-rule)
-    - [Collaborator](#collaborator)
-    - [Reference](#reference)
-  - [Data Structure (자료구조)](#data-structure-자료구조)
-    - [📖 정리노트](#-정리노트)
-      - [기본 자료 구조](#기본-자료-구조)
-      - [응용 자료 구조](#응용-자료-구조)
-  - [Algorithm (알고리즘)](#algorithm-알고리즘)
-    - [📖 정리노트](#-정리노트-1)
-      - [알고리즘 기본](#알고리즘-기본)
-      - [알고리즘 응용](#알고리즘-응용)
-  - [Operating System (운영체제)](#operating-system-운영체제)
-    - [📖 정리노트](#-정리노트-2)
-  - [Database (데이터베이스)](#database-데이터베이스)
-    - [📖 정리노트](#-정리노트-3)
-  - [Network (네트워크)](#network-네트워크)
-    - [📖 정리노트](#-정리노트-4)
-  - [Design Pattern (디자인 패턴)](#design-pattern-디자인-패턴)
-    - [📖 정리노트](#-정리노트-5)
-  - [Software Engineering (소프트웨어 공학)](#software-engineering-소프트웨어-공학)
-    - [📖 정리노트](#-정리노트-6)
-  - [Language](#language)
-    - [📖 정리노트](#-정리노트-7)
+- [About](#about)
+  - [Repository Rule](#repository-rule)
+  - [Collaborator](#collaborator)
+  - [Reference](#reference)
+- [Data Structure (자료구조)](#data-structure-자료구조)
+- [Algorithm (알고리즘)](#algorithm-알고리즘)
+- [Operating System (운영체제)](#operating-system-운영체제)
+- [Database (데이터베이스)](#database-데이터베이스)
+- [Network (네트워크)](#network-네트워크)
+- [Design Pattern (디자인 패턴)](#design-pattern-디자인-패턴)
+- [Software Engineering (소프트웨어 공학)](#software-engineering-소프트웨어-공학)
+- [Language](#language)
 
 ## About