MySQL is a very fast, multi-threaded, multi-user and robust SQL
(Structured Query Language) database server.
The new features in MySQL 8.0. In addition to Data Dictionnary and CTEs are:
    Move to utf8(mb4) as MySQL's default character set
    Language specific case insensitive collation for 21 languages (utf8)
    Invisible index
    Descending indexes
    Improve usability of UUID and IPV6 manipulations
    SQL roles - SET PERSIST for global variable values
    Performance Schema, instrumenting data locks
    Performance Schema, instrumenting error messages
    Improved cost model with histograms
