Web database application design examples wanted

Hi! I�ve written a couple of smaller web database applications in Java but I�m not completely satisfied with my design, especially where and how to put the database code. Now I�m looking for small open source examples of good design of web database applications in Java. I would appreciate if you could direct me to a good example application, preferably easy to understand. Also feel free to mention any other resource that you think I should look at. At the moment I don�t have the time to read a complete book but I plan to do this later � so book recommendations for professional Java developer are also very welcome.
Summary of recommendations I would like to get:
1) Java web database application with good design
2) Design book for professional Java developers
3) Any other design related resource
Thanks!

http://www.springframework.org/docs/MVC-step-by-step/Spring-MVC-step-by-step.html

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DATA:
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hermann

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Example
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http://help.sap.com/saphelp_nw70ehp1/helpdata/en/1a/456a3badc1b315e10000000a114084/frameset.htm
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Best Regards,
VVenkat..

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Hi Priya, thanks for input.
I think I should further elaborate the problems. Thanks for your highlight.
I have a lines chart with five key figures. So my chart will have five lines.
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CW 1    30     30    80    80    50
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It is simple issue D't worry..And one morething is Check the Specific Properties of the Template in Design of the web template.
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Web database application design examples wanted

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