Small. Fast. Reliable.
Choose any three.
*** 600,605 ****
--- 600,607 ----
  especially on big dbs . It is not expensive, royalty free. Really full SQL92, yet they have cool Object-
  Relational features.
  
+ *: To above paragraph: 'Valentina beats anything in 10-100+ times'. Ok, 10-100+ times of WHAT?. RAM Usage?, CPU Usage?, CPU Cycles?, CPU Count?, Consistent Gets?, Concurrent Users?, Concurrent Transactions?, Parses?, Executes?, Fetches?, Recursive Calls?, Physical Reads?, Documentation? ... If you don't have arguments based on real data in a production environment with real data load (users & transactions) your comment is useless. Benchmark it, prove it and then show us your results, not your 'thoughts'.
+ 
  I wonder how useful these "remarks" are...
  
  What about Apache Derby? It uses the Apache 2.0 license and is easy to embed in Java applications