$tables = {
#       names => ['A', 'B', 'C', 'D', 'E', 'AA', 'BB', 'CC', 'DD'],
#       rows => [0, 1, 20, 100, 1, 0, 1, 20, 100],
        names => ['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'],
        rows =>  [0,   1,  5,  10, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 50, 100],
        pk => [ 'integer auto_increment' ],
        engines => ['InnoDB']
};

$fields = {
        types => [ 'int',
                   'datetime',
#                  'date', 'time', 'datetime',
                   'char(16)', 'varchar(10)', 'varchar(256)' ],
        indexes => [undef, 'key', 'unique'],
        null => [undef],
#       sign => [undef, 'unsigned'],

#########################################################################
#       We don't specify charsets here as this will affect column naming 
#       and requires a grammar rewrite  when we change to another charset 
#       and/or collation.
#########################################################################
#       charsets => ['utf8'], collations => ['utf8_bin']
#       charsets => ['latin1'], collations => ['latin1_bin']
};

$data = {
#       numbers => [ 0..20, 0..99, 'null' ],
        numbers => [ 0..10, 0..20, 0..50, 'null' ],
        strings => [ 'varchar(32)', 'english' ],
#       temporals => ['date', 'year', 'datetime', 'null']
        temporals => ['datetime', 'null']
}