Learn how to use Java annotations to associate metadata with classes, methods, and other application elements in your Java programs. There are times when you need to associate metadata, or data ...

JPA @Column annotation properties. Along with the name property, the JPA @Column annotation can further customize the way a field maps to the database, through the use of the following properties: ...

JPA and Hibernate enum mapping. The Java enum, introduced in Java 5, will map to the underlying database without any intervention. The JPA framework, be it Hibernate or Toplink or DataNucleus, will ...