Relation between server's and runtime Data Model?

I am working on a project utilizing the MVC architecture.
After some doubts, I decided to create one DataModel class for each table of the server's normalized database and create the necessary relations at runtime and not in SQL prior to download.
The database is only a few MB and I need the flexibility.
I would appreciate some links to theoretical material regarding the relation between the runtime and the server's DB data model.
Thanks,
David

Hi Anirudh/Deepa,
As You said first I have created Outbound Connection Pool for DB adapter and given eis/DB/HRDBDataSource as JNDI name. It asked to save the file Plan.xml and i saved it in Oracle_soa1/Soa/Plan.xml
Next I created datasorce with JNDI name jdbc/HRDBDataSource and provided all credentials.
For AQ also i created connectionpool with JNDI name eis/AQ/MyAQ . Here also it asked to save the Plan.xml and Isaved it in Oracle_soa1/Soa/applications/Plan.xml
In Jdev while configuring AQ adapter I have selected the database [for this only i created connection pool and datasource] and given the JNDI Name as eis/AQ/MyAQ . (I tried with and without giving datasorce value jdbc/HRDBDataSource in AQ adapter )
Still I am getting the below error.
*Exception occured when binding was invoked. Exception occured during invocation of JCA binding: "JCA Binding execute of Reference operation 'Enqueue' failed due to: JCA Binding Component connection issue. JCA Binding Component is unable to create an outbound JCA (CCI) connection. Queue:EnQueue [ Enqueue_ptt::Enqueue(EMP_MESSAGE_TYPE) ] : The JCA Binding Component was unable to establish an outbound JCA CCI connection due to the following issue: No suitable driver found for . ". The invoked JCA adapter raised a resource exception. Please examine the above error message carefully to determine a resolution. No suitable driver found for 0*
Please guide me
Regards
PavanKumar.M

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