Might have been older docs. They now say that transactions are supported

“ Snapshot isolation: SlateDB supports snapshot isolation, which allows readers and writers to see a consistent view of the database. Transactions: Transactional writes are supported.“

I don't see any evidence this is implemented in the source code, and the README on Github also marks it as not-yet-implemented. There is an open issue for "design doc for transaction" here: https://github.com/slatedb/slatedb/issues/248 and an open issue for "Add range queries" here: https://github.com/slatedb/slatedb/issues/8