When you setup a URL in your jdbc properties like:
jdbc:derby://localhost:1527/vehicle;create=true
Does this mean all the data is being sent via HTTP on a specific port? (it seems so obviously)
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It has nothing to do with HTTP, no. The protocol used is specific to the database and JDBC driver, as is JDBC URL format. The only thing common to all JDBC URLs is the
jdbc:prefix.In this specific case, I’d say you have a Apache Derby JDBC URL, connecting to a server on localhost port 1527, database (or maybe user) name “vehicle”, creating it if necessary.
Another example would be an Oracle JDBC URL format:
Very different to the Derby one, but specifying the same sort of information.