Yes. However theoritically the answer is "NO". Per 
Connection there is only one Statement object is allowed. 
However, i have tried using 2 statement, i did not find any 
exception thorwn, in JDK 1.4(I am using).

Foreign key is a reference key of the Database.
if u set the foreing key refernece to the table, its make 
the relation between two table.

Yes

Bridge driver can work with applets
because applets are executed on any client browser but 
their classes are located at one loaction only

applets are travel in network

Most ODBC 2.0 drivers should work with the Bridge. Since 
there is some variation in functionality between ODBC 
drivers, the functionality of the bridge may be affected. 
The bridge works with popular PC databases, such as 
Microsoft Access and FoxPro.

When a user invokes a One Application Server servlet 
from a browser, the servlet may invoke one or more 
enterprise beans. For example, the servlet may load a 
JavaServer Page (JSP) to the user?s browser to request a 
user name and password, then pass the user input to a 
session bean to validate the input. 


Servlet/Jsp              EJB
User Interface------> BusinessLogic ---> DataBase
APp Client      
 

   After a valid user name and password combination is 
accepted, the servlet might instantiate one or more entity 
and session beans to run the application?s business logic, 
then terminate. The beans themselves might instantiate 
other entity or session beans to do further business logic 
and data processing.

EJDLOAD : this is used to extract the data from the back end
database and make them availabe to the ejb.

EJBSTORE: this is responsible to store the data into the
database by the ejb.

No  client cannot  directly interact with java bean.
1.java application calls home interface to get a reference 
for customer session object.
2.home interface creates customer session object which can 
be refernced by customer bean interface.
3. java clients gets refence for the customer session bean 
thru the bean interface.