Can anyone describe me the architecture of mysql operation ??

I know it starts with a script, that manages the child process, and if child
dies, it's replaced by a new one.

I have several mysqld processes working simultaneously.
How do they comunicate with each other ? Do they read concurrently from
database files (only) ?

Can I start two mysql instances (with several processes each) working on the
same database files ? How is file access managed ?

thanks
Nelson Gomes - Dep. Internet
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