The Row Options
section can be used to
configure options such as the row format, checksum use, and the
row size parameters needed for large tables.
To set the row format, choose the desired row format from the drop-down list. See http://dev.mysql.com/doc/mysql/en/MyISAM_table_formats.html for more information on the different row formats that are available. This option only applies to MyISAM tables.
When you expect a table to be particularly large, use the Avg Row Length, Min Rows, and Max Rows options to enable the MySQL server to better accommodate your data. See http://dev.mysql.com/doc/mysql/en/CREATE_TABLE.html for more information on how to use these options.