What are the possible values of the Hibernate hbm2ddl.auto configuration and what do they do

Question

I really want to know more about the update, export and the values that could be given to hibernate.hbm2ddl.auto
I need to know when to use the update and w

Answer 1

If you don't want to use Strings in your app and are looking for predefined constants have a look at org.hibernate.cfg.AvailableSettings class included in the Hibernate JAR, where you'll find a constant for all possible settings. In your case for example:

/**
 * Auto export/update schema using hbm2ddl tool. Valid values are update,
 * create, create-drop and validate.
 */
String HBM2DDL_AUTO = "hibernate.hbm2ddl.auto";