how to set the relationship between tables in ejb
Answer / ch.n.v.ganesh
First, relationships are maintained through foreign
keys, but you do not define foreign keys as conventional
EJB variables; they are generated and maintained by the
container.
Second, relationships generate additional methods on the
local interfaces of the EJBs involved. Consequently, you
will need to work with the Home interfaces for beans
through JNDI, rather than using factory classes as you
might for accessing them through their Remote
interfaces.
Finally, Container Managed Relationship (cmr) fields
may be used in EJB QL queries, just like conventional
fields, but only for EJBs within the same jar file.
| Is This Answer Correct ? | 0 Yes | 0 No |
What is dependency injection in ejb?
What is ejb and its types?
Differentiate Phantom from Un-repeatable?
Can a client interact with an JavaBean directly? Explain?
How can one EJB be called from within another EJB?
What is the full form of ejb in java?
Define ejb Create() and EjbPostCreate()?
ejb session beans and entity beans?
What is Enterprise JavaBeans Query Language (EJB QL)?
What do you mean by timer service and where it is used?
How can enterprise javabeans be accessed from active server pages?
What does it mean to be stateless?