Create and delete Glue databases, and describe a folder of CSV, JSON-lines or
Parquet files in S3 as a table: its columns, and for CSV the delimiter and
whether the first line is a header. Tables are written with the storage
settings Athena expects, so TheCloud's Athena can query one as soon as it
exists. Glue jobs and crawlers are not offered: the runtime stores them but
never runs them.