JPO is a framework for persistence (storage and retrieval) of domain (or data) objects in Java-based database applications. The object/relational impedence missmatch is widely regarded as a complex problem with no easy solution.
Cars changed overtime by people who wanted bigger cars or faster cars. People started to make plans for better cars, tested them and see if they people liked it. Cars are stil â¦ l changing today.
The phone on the other end changes the electrical energy into sound energy through the speaker. A car uses stored chemical energy in gasoline to move. The engine changes the chemical energy into heat and kinetic energy to power the car.