Essential Computer Science Knowledge for Job Preparation

Version control is now essential knowledge for developers. Let's learn Git and Github step by step, starting with basic git commands and signing up for Github :)

Bestseller 『Study Computer Architecture + Operating Systems on Your Own』 author's free lecture. A collection of computer architecture and operating systems books that developers must know.

Free lecture by the author of the best-selling book, “Network Study Alone.” A summary of a network textbook that developers must know.

This is a lecture on the book [Everyone's Git & GitHub] published by Gilbut Publishing. It contains only the essentials of version control using Git and GitHub. You will learn how to use Git, which can be considered a developer's essential knowledge, without commands and how to use GitHub proficiently.

LeetCode explained by Dalle, a Korean developer working at a Silicon Valley startup! This is a practical LeetCode problem-solving course that doesn't just provide answer codes, but compares multiple approaches for each problem, analyzes time and space complexity together, and explains why certain solutions are more efficient. First, we write the most intuitive approach and analyze its time/space complexity to identify bottlenecks and improvement points. Then, we explore alternative approaches applying various data structures and algorithmic techniques, comparing the performance differences and pros and cons of each method. Through this, it helps you develop problem-solving skills to design efficient solution strategies on your own when facing new problems.

A course that helps you understand core data structure concepts and practice explaining them verbally in interviews

Learn practical strategies for designing efficient and scalable database structures that accurately reflect the complex requirements of real-world scenarios.

A beginner's guide to SQL coding! We'll teach you the secrets of writing, interpreting, and validating SQL.

Analysis of CS major interview questions [Operating system/data structure/algorithm/database/network]!

mongoDB, NoSQL You hear a lot these days, but is it still an unfamiliar database? Aren't you using it like a relational database (RDS/SQL)? No matter how good the technology is, if it's not used correctly, it will have the opposite effect. That's why we often see cases of failure in using MongoDB. This lecture will teach you everything from basic concepts to practical know-how so that you can use MongoDB as MongoDB-like as possible.

✅ Out of the entire series (1) ~ (7), (4) data structure, algorithm, object-oriented, programming language ✅ CS101 series lectures - From basic computer theory to the latest practical examples - Provides a wide range of basic knowledge

"I have a backend technical interview in a week, what should I start with?" The secret to answers that make interviewers nod Master the actual answer patterns of Naver, Kakao, Coupang, and Toss successful candidates in just 3 days!

Learn the fundamentals of the web, networks, and HTTP that every developer should know, in a code-based, real-world, data-driven way.

[Web Dev Beginners Only] Build a Spring Boot REST API easily, step-by-step, fully understanding JPA.

This is a course on creating practical Unity games with databases. It covers topics that are usually difficult to encounter, explained through lectures.

If you ask an AI to "get the top 10 sales," it will whip up a plausible-looking query in no time. However, to determine if that query is actually correct, if the results of joining three tables are accurate, or if it's performing a full scan on 500,000 records without an index—you ultimately need a foundation in DB basics. This course doesn't cover anything overly difficult. In just 2 hours, you will learn the entire flow of SQL by coding along, covering exactly what you need to know before giving instructions to an AI. By the end of this lecture, you will no longer feel uneasy when faced with a query generated by AI.

Extract and utilize data through Oracle 18c and become a database expert!

This is an all-in-one curriculum for game programming beginners who are unsure of where to start. It is a comprehensive curriculum that covers the basics of game programming, including C++, data structures/algorithms, STL, game mathematics, Windows API, and an introduction to game servers.

This course teaches MS-SQL through baseball/company databases.

This is a guide course for beginners who are taking their first steps into Oracle. We will teach you the basics of user creation, table creation, and queries.

Learn the core HTTP features essential for practical use and how to design proper HTTP APIs.

This lecture comprehensively organizes the content that would be good for those who want to get a job as a new Spring Java backend developer, especially those who are about to have an interview.

CS knowledge lectures on design patterns, networks, operating systems, databases, etc. from the author of the #1 book in Korea, "CS Major Knowledge Notes for Interviews"! Covers all the concepts needed for CS interviews and the latest past questions!

SQL data analysis! We will teach you how to solve practical problems that are applicable in the field, quickly and easily!