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When is a database schema not a database schema?

Thanks to Ronald Bradford for this story
Oracle Virtualization and Cloud Consulting
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mysql> show schemas; +--------------------+ | Database | +--------------------+ | information_schema | | innodb | | mysql | | performance_schema | +--------------------+ 4 rows in set (0.00 sec)
mysql> drop schema innodb;
ERROR 1010 (HY000): Error dropping database (can't rmdir './innodb/', errno: 17)

This is an additional schema that is included in an AWS RDS installation. You should not put directories in the MySQL data directory.

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