Yasir Karim wrote:Murach's Java Servlets and JSP does not seem to be written for the certification purpose.
Yasir Karim wrote:
Not sure if this is the right book for Web Component Developer Java 6?
James Sutherland wrote:
Do you have a cyclic relationship? One of the foreign keys may need to be nullable to resolve a cycle, setting logging to finest will give some insight on what is going on.
James Sutherland wrote:
Where does examResults come from? Is it part of the persistence context? Is it new or existing, perhaps you need to merge it, or persist it separately.
James Sutherland wrote:
But perhaps include your schema.