I'm looking to see if Derby can be used similarly to Berkeley DB -- a lower-level API.  Can anyone tell me?

 

Maybe to the access area of the "Store Layer" which in some Derby documentation is described like this:

"The Store layer is split into two main areas, access and raw. The access layer presents a conglomerate (table or index)/row based interface to the SQL layer. It handles table scans, index scans, index lookups, indexing, sorting, locking policies, transactions, isolation levels."

Now that Derby is included in Java 16--I am having a really hard time finding Java documentation that talks about Derby.