I scheduled an exam next week and I tried some mock exams.
I am surprised to find a lot of very tough and precise questions on EJB. For instance EJB QL query, name of interface's method.
For example :
Which statements will select all employees with first name John?
SELECT OBJECT(e) from Employee e WHERE e.firstname LIKE 'J*'
SELECT OBJECT(e) from Employee e WHERE e.firstname LIKE 'J_hn'
SELECT OBJECT(e) from Employee e WHERE e.firstname LIKE 'J%'
SELECT OBJECT(e) from Employee e WHERE e.firstname LIKE 'J?hn'