SQL and XML have schemas, and they're to a large extent human readable, even to people who aren't developers. If storage is cheap, compression isn't very important.
I've never come across this Parquet-format, is it grep:able? Gzip:ed CSV is. Can a regular bean counter person import Parquet into their spreadsheet software? A cursory web search indicates they can't without having a chat with IT, and SQL might be easier while XML seems pretty straightforward.
Yes, CSV is kind of brittle, because the peculiarities with a specific source is like an informal schema but someone versed in whatever programming language makes this Parquet convenient won't have much trouble figuring out a CSV.
I've never come across this Parquet-format, is it grep:able? Gzip:ed CSV is. Can a regular bean counter person import Parquet into their spreadsheet software? A cursory web search indicates they can't without having a chat with IT, and SQL might be easier while XML seems pretty straightforward.
Yes, CSV is kind of brittle, because the peculiarities with a specific source is like an informal schema but someone versed in whatever programming language makes this Parquet convenient won't have much trouble figuring out a CSV.