I am using MySQL at present.
I came across MariaDB, a drop-in replacement for MySQL.

2 simple questions--
1) File names in MariaDB, in many cases, are same as those in MySQL. Wouldn't that attract objection from Oracle as 'breach of the copyright' ?
2) May I use MariaDB for commercial distribution (with or without using its source) ? Whether the license is similar to MIT license?

Thanks,
Vineet