MySQL is an open source DBMS which is built, supported and distributed by MySQL AB (now acquired by Oracle)
Much more conservative approach to disk space management – each MyISAM table is stored in a separate file, which could be compressed then with myisamchk if needed.
With InnoDB the tables are stored in tablespace and not much further optimization is possible. All data except for TEXT and BLOB can occupy 8,000 bytes at most. No full text indexing is available for InnoDB. The COUNT(*)s execute slower than in MyISAM due to tablespace complexity.
mysqladmin -u root -p password “newpassword”
Yes, and name it ~/.my.conf. You might want to change the permissions on the file to 600, so that it’s not readable by others.
tee followed by a filename turns on MySQL logging to a specified file. It can be stopped by command note.
Difference : mysqli is the object-oriented version of mysql library functions.