Explanation: In order to perform consistency checks or table repairs on a MyISAM table a ‘CHECK TABLE’ or ‘REPAIR TABLE’ statement is issued. The ‘mysqlcheck’ program can also be invoked.

Explanation: ‘ANALYZE TABLE’ performs a key distribution analysis and stores the distribution for the named table or tables. For the MyISAM tables, this statement is equivalent to using ‘myisamchk –analyze’.

Explanation: ‘OPTIMIZE TABLE’ table catches and throws any errors that occur while copying table statistics from the old file to the newly created file. It returns a result set of columns.

Explanation: ‘REPAIR TABLE’ works for MyISAM, ARCHIVE, and CSV tables. For MyISAM tables, it has the same effect as ‘myisamchk –recover’ tbl_name by default. This statement does not work with views.

Explanation: The Perl DBI is the Perl Database Interface. The work of the interface is to form a link between the application programming interface in C with all the other programming languages.

Explanation: All Perl scripts generally begin with a #! (shebang) line. A script is a file containing a sequence of commands. The Perl scripts are text files, which can be created using any text editor.

Explanation: The interpreter switches between code mode back and text mode when it sees another special tag that signals the end of the code. This enables the mix of static text with dynamically generated results.