understand mysql_prolog

  It can be said that a programmer who does not understand the basic principles of mysql and simple optimization ideas is not a qualified program, because if you do not understand these technologies, it is difficult for you to develop high-performance code. I have also contacted many developers, most of whom focus on the program code level and know little about the database level.
    In order to help the majority of technical peers and make their professional skill system more perfect, we decided to summarize and sort out the core technical points of mysq from the perspective of development. The purpose is to roughly include:
    1. How to design a reasonable database table structure
    2 , Some understanding of sub-database and sub-table
    3. The principle of index implementation and optimization techniques
    4. The isolation level of transactions 5. The principle of transactions     and
    common
    optimization     strategies Concept     9. Database master-slave principle and environment construction    10. Commonly used classic sql    11. Brief description of mvcc    12. Optimization parameters for batch execution of sql    13. Mapping relationship between mybaits and mysql types    14. MySQL data type