MySQL for IBM AIX is available in a number of different forms:
Using a binary tarball distribution provided at http://dev.mysql.com/downloads/. Please read the general notes on AIX installation before continuing. For more information on binary installations, see Chapter 1, Installing MySQL on Unix/Linux Using Generic Binaries.
Using a source tarball and compiling MySQL. Please read the general notes on AIX installation before continuing. You should also check the instructions on building on AIX from source. For general information on building from source, see Installing MySQL from Source.