仕事に直接書き込むSQLチューニング

The importance of MySQL is constantly being highlighted in various aspects. Through this lecture, you will learn step by step and through this, you will jump to the intermediate level in one go.

This course provides developers/operators using Oracle with PL/SQL concepts and practical skills that can be immediately applied in the field.

You will be able to extract the data you want directly without the help of a developer. We will provide everything you need for analysis, from simple queries to joins. Start learning SQL with a direct lecture from the author of the book <Planner's SQL>.

I've created a 'Redis Introduction/Practical (Query Performance Optimization)' course that non-majors can easily understand and immediately apply in practice!

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.

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

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

We covered the concepts considered while migrating 20 billion data items managed through the existing MongoDB to MySQL.

This is a course on creating practical Unity games with databases. You can work through the difficult-to-approach parts through the lectures.

Learn how to analyze 5 million Korean apartment transaction data using PostgreSQL. Covers the process of data cleaning, transformation, and deriving meaningful insights through various SQL queries.

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

If you can master DB and programming, you should be more than halfway prepared for the information processing engineer exam. Let's take a look at the DB and programming parts, which are worth 45 to 55 points in the practical exam, and pass the written exam steadily.

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

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

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

This course is designed to help students learn and practice PHP programming concepts. It is designed for students who want to learn PHP programming concepts.

Immutable truths for developers/engineers that will never change even in the AI era! We provide essential computer science knowledge for free to prepare for developer/engineer job applications and technical interviews.

We enable you to fundamentally understand and resolve issues where Hangeul appears broken on web pages or in databases, or files contain unknown characters.