Should I start with Entity Object or Java Class Diagram ??

Hi,
I come to J2EE / OO application development from non-oo programming world. I am still confused about what step-by-step development approach should I take ?
Should I :
- start with creating Entity Object from available database table ?
- should I start with Java class diagram, followed by generating database tables, then create EO from it ?
Could anybody please help me, what best practice step by step development approach should I take ?
Is there any white paper / docs about this ?
Thank you for your help,
Krist

Krist,
If you are not from the OO world then you may be interested in this new site on OTN (http://otn.oracle.com/formsdesignerj2ee) There is a workshop that starts by looking at an existing datamodel and builds up from there.
If you are starting from nothing, you can indeed start higher at the Class Model level.
I recently started discussing data modeling on my blog (http://www.groundside.com/blog/content/SueHarper/) and there are some very good comments(feedback from readers) that may possibly be useful to you.
If you are new to the UML modeling world, I recommend you read two very good papers by Jan Kettenis on OTN (http://www.oracle.com/technology/products/jdev/collateral/collateral10g.html) They are Getting Strted with UML Class modeling and Getting Started with UML Use Case Modeling.
Shay pointed you to Toplink. There are a lot of resources on OTN for Toplink, including tutorials.
Personally? I think if you have time, and if you can, start with a Class Model and perhaps a Use Case model, then you can start planning your application development from a solid base.
Regards
Sue Harper

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