I guess it depends what the code is written in.
If the application is based on a lot of Oracle Stored Procedures then
you would have to port those stored procedures to a language suitable
for MySQL.
If the application was written in Java or Perl using JDBC or DBI then
porting the application
In section 16.7.5 in the mysql manual it says that you can setup
replication with InnoDB tables on the master to MYISAM tables on the
slave. While I have proven this to be true, it does not warn you that
if in your Master's contstraints you have ON DELETE or ON UPDATE clauses
those clauses will
