If the encodings used for queries on server and client
side are not the same, MySQL4 won't work.
The encoding used by the server is set during the
creation of the database with the "CHARACTER SET" clause.
The encoding used on the client side is set in some
/etc file in the host. I.e.: It is global for all
connections to any MySQL database.
This patch allows the user to set the character set
used to send queries to the server. The character set
used is defined in the UCCASS configuration file.
You need to set the character set if you use MySQL4.
MySQL5 automagically arranges this for you (IIRC).