[The concept is easy~, the practice is intense] SQL data analysis, utilization!

The flower of Java programming, object-oriented programming! Concepts and practice. We will teach you at the same time.

Spring Boot, the starting point of Java web development! We will teach you the essentials step by step while making it yourself!

Introduction to SQL Data Analysis! Quick and easy to understand with practical problem solving!

Introduction to front-end and web development! The starting point. Easy and quick to learn.

Introduction to Java Programming! The starting point. Easy and quick to learn.

Introduction to SQL Data Analysis! Quick and easy to understand with practical problem solving!

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

Learn how to use the most commonly and importantly used advanced T-SQL queries in practice from a SQL Server expert consultant and Microsoft MVP, so you can write SQL in a more SQL-like way.

Sometimes, data processing is blocked and frustrating. If you are not a professional programmer or developer, learning unfamiliar fields such as Python or Java is not easy and there is not enough time. This is for those who only know Excel and SQL basics when it comes to frequently used things. This is the first part of the SQL query book that you can find and use when you need it.

In this lecture, you will learn how to create an ERD. You will learn database design. (The only big data design lecture in Korea)

★.NET 8.0★ This is a basic course on Windows Desktop development using Winform. Learn how to easily do DB CRUD using EntityFrameworkCore. We will teach you the class design method based on loose coupling and the "basics" of Form UI Design. We will also provide the source code used in the course :)

By implementing various practical data analysis cases using SQL, you can simultaneously improve your data analysis and SQL utilization skills.

★PYTHON★ This is a basic lecture on server development using Fast API. Learn how to develop servers easily, quickly, and conveniently using various packages such as Fast API, SQLAlchemy, Pydantic, and Starlette! Don't worry, we have prepared a DB backup file as well as integration with PostgreSQL! We will teach you the "basics" of UI design using Dash and Plotly and provide the source code used in the lecture :)

Learn about Race Condition, a representative concurrency problem. Practice by comparing single server environments and distributed environments that cause concurrency issues. Understand transaction boundaries and isolation levels. Learn the differences between optimistic locking, pessimistic locking, and distributed locking.

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

This course is a master class that systematically covers the fundamental principles and practical applications of MongoDB. Starting with core MongoDB concepts, you will systematically learn essential topics for practical work, such as database design, CRUD operations, indexing, aggregation pipelines, performance optimization, transactions, and security. It explains topics step-by-step so even beginners can understand, and you can deeply learn the working principles of MongoDB through exercises and examples. This is the best introductory and practical course for developers who want to build strong MongoDB skills for practical work.

For those who feel overwhelmed preparing for the SQLD exam, this is a comprehensive course that analyzes the entire Norang-i scope, organizes necessary theory, conducts practice-focused classes, and solves all problems systematically. With short, concise clips and topic-based segmented structure, you can build skills that work directly in the exam room.

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

What do you learn in the 'Business Information Visualization Certification' course? This certification course focuses on developing the ability to analyze data well, visualize it in an easy-to-understand way, and clearly and effectively communicate the information needed when making important decisions in a company or organization. Simply put, it's a course where you learn the skills to not just look at data, but to discover the hidden meanings within it and express them through pictures, tables, graphs, etc., so you can explain them well to others. Through this course, you will: Develop the ability to think strategically through data, build practical skills that can be immediately applied to actual work, and enhance your professional expertise and competitiveness. Through this lecture, develop the ability to connect business and data, and take one more step toward becoming an expert who understands and explains data.

From understanding SQL to using actual functions, Complete preparation for SQLD certification with the latest past exam questions!

Let's understand data analysis suitable for advanced retail business and learn how to utilize tools utilized in the industry!

SQLD, where do I even start? This course is for those who feel completely lost - you'll meet a transformed version of yourself after completing it. SQLD All-in-One Pass!

Knowledge Graph-based RAG System Implemented with Neo4j: Next-generation search technology that leverages data relationships beyond simple vector search Maximize RAG performance with the power of graph databases!

Learn common components of global-scale services through popular papers, books, and articles.

This is a course aimed at obtaining the nationally recognized SQLD certification, and SQLD refers to developers who can write accurate SQL for manipulating and extracting data while developing application software based on database and data modeling knowledge.