My name is Wang Dingding, and my online name is IT Bond. I have over 10 years of experience in DBA operation and maintenance. I am skilled in Oracle and MySQL backup and recovery, installation and migration, performance optimization, and emergency response to faults. WeChat official account is IT Bond, with more than 100000 followers of CSDN blog and Oracle database enthusiasts. It has obtained Oracle OCM and MySQL OCP certification masters. I have written more than 500 technical articles through the technical community and WeChat official account all the year round, with a reading volume of 2 million, and also wrote a book called "MySQL Private Kitchen in the Workplace".