Simplify Java Object Persistence with Hibernate The 'impedance mismatch' between relational databases' tabular orientation and object-oriented Java's hierarchical one is a perennial problem for which the Java world has several good solution offerings. The second in a three-part series, this article examines the ways that the Hibernate framework attempts to simplify the chore of connecting relational databases and the Java programming language. in General Computerwith computerdatabasesgeneralimpedancemismatchorientationrelationaltabular