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.
Save. Perhaps no invention had a greater impact on 20th-century America than the automobile. From its origins in the 1890s as a toy for the upper echelons of society, the car quickly became essential for the average American, transforming how Americans lived, traveled and relaxed.