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

To whom searches for default value...

It is written in the source code at version 2.0.5 of spring-boot and 1.1.0 at JpaProperties:

    /**
     * DDL mode. This is actually a shortcut for the "hibernate.hbm2ddl.auto"
     * property. Defaults to "create-drop" when using an embedded database and no
     * schema manager was detected. Otherwise, defaults to "none".
     */
    private String ddlAuto;