Hibernate for Not Yet Techies

"Using This Open Source Tool to Store Java Objects in Relational Databases"

by Richard Stooker, President Info Ring Press and author of Secrets of Changing to a Computer Career

Hibernate is a program for object/relational mapping / ORM for Java

Hibernate is a the layer between the object oriented programming language of Java and the relational databases which large, modern organizations depend on to store data about their inventories, customers, sales and so on.

The problem is that of database persistence. The developer must make the data work both as a Java object and as part of the relational database, even though the models are different.

So Hibernate allows you to save Java objects into a relational database and retrieve them without using SQL.

Enterprise Java Beans / EJB suffers from this object/relational mismatch paradigm. Plus, Hibernate does not require a Java 2 Enterprise Edition / J2EE application server, but EJB does.

Hibernate is open source software licensed under the Lesser GNU Public License. It was started in 2001 by Gavin King, who's still the lead developer of the project.

Hibernate covers all:

Entity association

Class inheritance

Special type matching strategies

It uses an XML mapping file to tell it which tables relate to which objects.

The Hibernate Query Language / HQL correlates with EJB Query Language / EQL in EJB 3.0

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