Congratulations, you just made a huge leap forward in your java database knowledge!
We handled simple JDBC connection opening, committing and rolling back, how multiple users can simultaneously interact with a database, what optimistic and pessimisting locking are, as well as isolation levels and savepoints. Phew! Quite a ride!
Now that you know all the "magic" behind JDBC connection handling, you will be surprised at how simple Spring/Hibernate are, when it comes to dealing with the database.
(If you skipped one of the previous chapters, now is the time to catch up! Do not go to the next chapters without having done all the JDBC exercises)
Want to read on?
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