It's true. Brother Feng is a person who has 10 years of experience in large-scale Oracle and MySQL related database services. Brother Feng's database is a free tutorial, so it's true. Fengge Course is the learning center of Fengge Database Course in 5 1CTO College, and the registered trademark patent is Fengge Education. Lecturer: Brother Feng is a gold medal lecturer of 5 1CTO (ranked in the top five), database teaching director of 5 1CTO, MBA master, PMP project management division, founder of ITPUX technology network, and has large-scale database services related to Oracle and MySQL for over 10 years. Obtain OracleOCM/OCP/MBA/PMP/IBM 10 or above IT certification and management certificate; In recent years, thousands of students have been trained to close the database, and the number of course students has reached 3 million.