The last statement needs more explaining or may be an error.

$0I am referring to the statement  "We recommend that a table contain no more than 253 FOREIGN KEY constraints, and that it be referenced by no more than 253 FOREIGN KEY constraints. Consider the cost of enforcing FOREIGN KEY constraints when you design your database and applications." . It is not really clear what the recommendation means. Is it that a table not contain more than 253 Foreign key columns per table row? Or that the table itself have at most 253 foreign keys defined? Also, not sur