Binary package “libmysqld-dev” in ubuntu bionic

MySQL embedded database development files

 MySQL is a fast, stable and true multi-user, multi-threaded SQL database
 server. SQL (Structured Query Language) is the most popular database query
 language in the world. The main goals of MySQL are speed, robustness and
 ease of use.
 .
 This package includes the embedded server library and header files.